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New Basic Assignment #4: Perspective

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Category: Dyxum Photographs
Forum Name: Photographic Assignments
Forum Description: Photographic assignments to improve your skills and abilities
URL: https://www.dyxum.com/dforum/forum_posts.asp?TID=57086
Printed Date: 05 August 2020 at 17:57


Topic: New Basic Assignment #4: Perspective
Posted By: pegelli
Subject: New Basic Assignment #4: Perspective
Date Posted: 01 January 2010 at 13:20
Here's a back-to-basics topic assignment #4. This is a three-part assignment on perspective, and the different perspectives created by different viewpoints and angle of view.

If the expected results of these exercises are second nature to you, then try to do something a little out of the ordinary within the scope of the excercise - play with it - find subject matter that's exceptionally appropriate or unusual.

This assignment is best done using a tripod, but it's up to you. I suggested photo size guidelines of 400x600 because the assignment involves quite a few photos and a small photo ought to be good enough to judge perspective, but you can feel free to deviate there. You're expected to do the three parts in the order provide, i.e first A, then B and lastly C. You can put them all in one post or build it up in 3 steps. It's your choice.

Part A. "Telephoto Compression"
Using a longish telephoto lens, ideally at least 200mm, but whatever you have, take a photo of something that's a bit far away to illustrate "telephoto compression" (i.e. making objects appear close together). Now, assuming you're using a tripod, leave the camera in place, remove the tele lens and replace it with a moderate wide angle (20 to 28mm or whatever you have). If not using a tripod, try your best to shoot as if you were (aim at the same subject from the same position). It's probably best to lock exposure between the shots for this exercise so the exposure on the second isn't influenced by parts of the scene that weren't in the tele shot. Download the shots, resize the tele shot to, say, 400x600. Then crop the WA shot so that the field of view is the same (so you get the same picture edge to edge) and resize it to 400x600. Compare (post) the results.

Part B. "Zoom with your Feet"
For this one, you'll need a wide, normalish, and tele lens. Recommendations are 18-24mm for WA, 28-35mm for normal and 70-100 for tele; primes, zooms or any combination, and feel free to use different FLs if you don't have anything in one of those ranges.
Find a scene that contains subject matter that's not too distant - measured in feet or yards. Standing in one place (or using a tripod) take a shot (with camera approximately level, not aimed up or down) at WA, normal and tele. Remember the framing/subject size you saw with the WA and tele shots (easier: bring them up on the LCD for review when you need them). Put the normal lens on the camera and walk straight toward the center of the shot until you get a field of view similar to what you saw with the tele lens. Shoot it. Now walk straight backward until you get a field of view similar to what you saw with the WA lens.
Download & resize all to 400x600. Post for comparison the WA shot versus the shot taken with the normal lens from farther away. And post for comparison the tele shot versus the shot taken with the normal lens from close.

Part C. Hide and Seek
Pick a moderate FL that you enjoy ... moderate wide to short tele. Be ready to shoot ... find a subject that you want to shoot and as soon as you find it, STOP. You should be standing up with the camera at eye level. The only composition you're allowed to do is aim the camera to put the subject where you want it in the frame (centered, along a thirds intersection, whatever). If there's a tree or a sign sticking up behind a persons head; a piece of garbage in the foreground; anything else you don't like, tough - just shoot ! Now, study the rectangular scene that you can capture with that particular lens. Look at distracting elements or look for elements that might be interesting that were hidden from view. Improve on your first shot by moving the camera position up, down, left or right ONLY - not forward or backward (and not changing lenses or zooming). Download, resize and post before & after shots.

Have fun !

General Assignment Rules


The general rules for the assignments are as follows :

- clean slate, all “old” assignments will be locked (over time as the new ones are created)
- no mining, shots must be specifically taken for the assignment (we trust you )
- only one assignment at the time. Once started you can only take the next assignment after having passed.
- one dimension crop and minor straightening allowed (to allow different aspect ratios, but don’t crop in both directions)
- max 2 pics per post/try
- you can do the assignments in any order, and repeated as many times as you want
- at least one moderators or admin will comment on every post and determine fail/pass. This might include general C&C as well.
- all members of Dyxum can also leave comments on the shots posted
- id of members that passed will be kept in a "pass post"
- specifically good pictures or good examples of assignment passes will be kept in a new "assignment gallery"
- instructions for specific assignments will generally stay as is (and we'll have to write new ones for new assignments).
- shots posted for the assignments are eligible for selection in the weekly exhibitions




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Replies:
Posted By: Berean
Date Posted: 31 January 2010 at 16:46
My submissions for this assignment.

Sorry: Still don't know how to embed exif data

Part 1.
Telephoto compression.



Wide-angle view (cropped to give a similar view)


Part 2.

70mm, stood approximately 13 metres from image. a700, Sigma 17-70mm, f/9, 1/160s, ISO 100

17mm stood approximately 3 metres from image a700, Sigma 17-70mm, f/9, 1/125s, ISO 100

35mm, stood approximately 6 metres from image, a700, Sigma 17-70mm, f/9, 1/125s, ISO 100


Part 3.
1. a700, Sigma 17-70 @ 17mm, f/9, 1/80s, ISO 100. Simply shot image as seen.

2. a700, Sigma 17-70mm @ 17mm, f/9, 1/80s, ISO 100. Downward vertical movement [/IMG]to strengthen the image by including foreground interest. No horizontal movement.


Thank you for your comments. Ian.
[/IMG]

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Can't you see? It all makes perfect sense, expressed in dollars and cents, pounds, shillings and pence: Roger Waters.

A700, Sig 10-20, 17-70, 70-200, Min 24-85, 28, 50, Vivitar 100 macro, HVFL 42AM


Posted By: pegelli
Date Posted: 31 January 2010 at 22:15
I think you got part 2 and 3 as intended. Only for part 1 you didn't leave the camera in place as per the instructions. The intent of part 1 is to leave the camera in place and crop the WA shot such that you have the same field of view as the tele shot, and except for a loss of sharpness and/or resolution you get exactly the same perspective. So you need to repeat that part for a pass.

While you're at it you might (but not obligatory) repeat part 2 with a smaller subject (that doesn't fill the full frame) and see the perspective relation of the background change as you zoom with your feet.

The whole objective of part 1 and 2 is to defuse the myth that perpective is controlled by focal length, while in reality perpective is controlled by the position from which you take the shot.

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Posted By: Berean
Date Posted: 01 February 2010 at 14:44
Originally posted by pegelli pegelli wrote:

I think you got part 2 and 3 as intended. Only for part 1 you didn't leave the camera in place as per the instructions. The intent of part 1 is to leave the camera in place and crop the WA shot such that you have the same field of view as the tele shot, and except for a loss of sharpness and/or resolution you get exactly the same perspective. So you need to repeat that part for a pass

My resubmission for part 1. I see what you mean regarding telephoto compression: thanks.
Telephoto, but resized.


Wide-angle, cropped and resized.


Thanks again. Ian.

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Can't you see? It all makes perfect sense, expressed in dollars and cents, pounds, shillings and pence: Roger Waters.

A700, Sig 10-20, 17-70, 70-200, Min 24-85, 28, 50, Vivitar 100 macro, HVFL 42AM


Posted By: bms44974
Date Posted: 01 February 2010 at 17:08
@Berean: That's got it for #1, Ian. I would have perferred something closer to 400x600, but the compression is obvious enough. With Pegelli's OK on Parts 2 and 3, this is a pass on the assignment.

Cheers... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: pegelli
Date Posted: 01 February 2010 at 19:26
I concur, a clear pass now that you have correctly executed part 1. Btw, I really like how you did part 3. You didn't remove any distractions but really added matter for interest. Well done.

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Posted By: goldsmid
Date Posted: 21 March 2010 at 22:15
Here is my submission for Part A. Not the nicest shot, but I am going for the technical points here for the assignment:

First shot:

ISO: 400
Exposure: 1/20 sec
Aperture: 29.0
Focal Length: 200mm





Second Shot:

ISO: 400
Exposure: 1/30 sec
Aperture: 22.0
Focal Length: 18mm




Please let me know if Part A passes. I am working on the second two parts and will submit soon.



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a850, KM 28-75, Sony 70-300 G, Sony 100mm Macro, Sigma 15-35


Posted By: pegelli
Date Posted: 22 March 2010 at 09:02
Exactly on target for a pass in part A. It would have even been clearer if you would have sized them the same, but this will certainly do.

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Posted By: goldsmid
Date Posted: 24 March 2010 at 03:11
Here is my attempt at Part C:

First Shot:
ISO: 400
Exposure: 1/8 sec
Aperture: 6.3
Focal Length: 50mm




Second Shot:
Removed car by repositioning window in frame and crouching in the same place where I was.

ISO: 400
Exposure: 1/8 sec
Aperture: 6.3
Focal Length: 50mm



Does this satisfy Part C?



I am now on to Part B.

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a850, KM 28-75, Sony 70-300 G, Sony 100mm Macro, Sigma 15-35


Posted By: pegelli
Date Posted: 24 March 2010 at 06:58
It satisfies part C OK, but normally you're expected to do part B first. However it's not in the description (will update later) so can't hold that against you. So looking forward to your interpretation of part B.

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Posted By: goldsmid
Date Posted: 24 March 2010 at 19:14
Here are my shots for Part B:


WA Shot:

ISO: 200
Exposure: 1/100 sec
Aperture: 7.1
Focal Length: 22mm




Normal Shot 1:

ISO: 200
Exposure: 1/60 sec
Aperture: 7.1
Focal Length: 50mm




Tele Shot

ISO: 250
Exposure: 1/100 sec
Aperture: 7.1
Focal Length: 85mm





Normal Shot 2 (Match Tele Shot):

ISO: 250
Exposure: 1/60 sec
Aperture: 7.1
Focal Length: 50mm




Normal Shot 3 (Match WA Shot):

ISO: 200
Exposure: 1/125 sec
Aperture: 7.1
Focal Length: 50mm




Did I pass?



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a850, KM 28-75, Sony 70-300 G, Sony 100mm Macro, Sigma 15-35


Posted By: bms44974
Date Posted: 25 March 2010 at 18:43
@goldsmid: That looks like a pass to me. With Parts A, C, and B completed (in that order), it's on to your next assignment. Cheers... Brian    

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: Dudger
Date Posted: 05 April 2010 at 13:58
Im not sure that my results show the compression you were after ? - but here goes

Part A - Long Lens 250mm (Tripod)


Part A - Wide Lens 18mm Cropped (Unmoved Tripod)



On Part B - even though i took a printout of the instructions - i now see i didnt follow em correctly - but i think i did what was intended, i took a Middle shot - swapped to wide lens and walked forwards to try and get the same framing then swapped to long lens and walked backwards to try and get the same framing ? - If thats not acceptable - no problem :)

Part B - 50mm


Part B 18mm


Part B 135mm (Couldnt go further back because of a hillside hence 135 :) )



Im slightly more confident on Part C

Part C -Stop and shoot


Part C - Adjust shot (Moved sideways and Crouched but didnt go closer)



Hope thats all ok

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Dave

A330 - SAL16~105 - Min100-300 APO - Min50/1.7 - 5600HSD


Posted By: pegelli
Date Posted: 06 April 2010 at 21:37
Flying colours Dudger. Another pass for you!
The order of part B is not important, but the objective is to see how with constant framing of the main subject the "perspective" vs. the background/foreground is different. I think that came out quite well in your chosen subject.


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Posted By: dalaman
Date Posted: 21 May 2010 at 15:32
Here comes Part "A." Not much of a shot but does it pass?
This is the 200mm shot.

This is the 28mm shot cropped.


Posted By: pegelli
Date Posted: 23 May 2010 at 18:57
Yep, passed as far as I can tell. You can post all three parts (A, B and C) in one post or as three different posts. Your choice.

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Posted By: dalaman
Date Posted: 24 May 2010 at 01:30
Here is Part B My backyard



and Part C - Me and my shadow


I'm really not that fat, OK, I am


Posted By: pegelli
Date Posted: 24 May 2010 at 08:37
Part B you passed with flying colours, well done.

Part C, sorry to say but I like the first shot better than the second. The second has a much busyer background (sidewalk/driveway). I can see why you added the shadow of the postbox, but for me the background spoils it. So can you try part C again?

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Posted By: dalaman
Date Posted: 24 May 2010 at 18:05
Part C, 2nd try



Posted By: pegelli
Date Posted: 24 May 2010 at 19:48
Ok dalaman, I consider that a pass, 2nd shot is more attractive and has more "depth" to it. So you've now successfully completed all parts of "perspective", well done.

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Posted By: Maddmack
Date Posted: 03 June 2010 at 05:33
how does this work http://dyxum.com/dforum/new-basis-assignment-4-perspective_topic57086_page2.html - assignment 4 http://maddmack.smugmug.com/Other/assignments/12413830_G4hCA#888190303_mFTyb-A-LB"> [/IMG] i hope i got the posting correct


MOD EDIT, Found your smugmug gallery, this is how the post should look (normally), pls. use "post options/edit post" or "quote" to see how the syntax should be written.


Part A:
300 mm:
http://maddmack.smugmug.com/Other/assignments/12413830_G4hCA#888190248_RHfuk-A-LB">

20 mm focal length, center crop:
http://maddmack.smugmug.com/Other/assignments/12413830_G4hCA#888190303_mFTyb-A-LB">

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camera gear, A850, A77 lenses Minolta. 20,2.8 50/2./8 macro 100/2.8 macro 28-75 2.8D
28-135 4-4.5 sony 70/300G 300.HS white f4 500 f8   


Posted By: pegelli
Date Posted: 03 June 2010 at 06:37
@ Maddmack, pls. read http://www.dyxum.com/dforum/posting-images-and-links-faqs_topic28010_page1.html - this post carefully about posting images. I have the feeling you're doing some things that are incorrect as well as allways linking back to the thread which isn't needed.

Also for this assignment part A we're expecting at least 2 images and I only see 1, so impossible to give a verdict on that.

EDIT after editing your post

@ Maddmack, that's a pass for part A, only difference is resolution and sharpness, but the perspective is exactly the same. Looking forward to your parts B and C

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Posted By: moo-ha-ha
Date Posted: 05 June 2010 at 00:15
Here is my attempt at this assignment

Part A
[1] 200mm, f/11, 1/320s, ISO400

[2] 24mm, f/11, 1/320s, ISO400


Part B
[1] WA @ 24mm, f/7.1, 1/60s, ISO200

[2] Normal @ 35mm, f/6.3, 1/100s, ISO200

[3] Tele @ 105mm, f/5.6, 1/160s, ISO250

[4] Normal to match WA @ 35mm, f/5.6, 1/80s, ISO200

[5] Normal to match Tele @ 35mm, f/5.6, 1/60s, ISO200


Part C
[1] 50mm, f/10, 1/250s, ISO200

[2] 50mm, f/10, 1/250s, ISO200 (moved approx. 10 feet to right)


Mayur

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| Mayur |

| KM 5D | 24-105D | 35 1.4 | 100 2.8M | 200 2.8G | 2x APO II |

| a700+VG | DT 16-105 | 50 1.4 | 70-300G | 70-400G |


Posted By: pegelli
Date Posted: 07 June 2010 at 10:38
moo-ha-ha, only noticed this today, sorry for responding late.

I think part A and C are flawless and will pass.

I think you also executed part B technically by the book, but by choosing a flat object you kind of missed the intent of part B, which is that if you have the main subject framed the same between WA and Tele that the major difference is the relation of the subject vs. the background which is absent in the way you took the shots. So pls. repeat part B with a more 3-dimensional scene where you can clearly see the differences in relation between the subject and background as you change focal length (and position)

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Posted By: moo-ha-ha
Date Posted: 07 June 2010 at 11:08
Thanks pegelli, No need to apologize as I am in no hurry to go anywhere...

I had a feeling about Part B; I knew that very slight transparent background on these shots was not going to be enough for the purpose of this assignment.

But in my defense, I forgot the assignment instruction print-out at home while I was away taking photos and I shot Part A and C from memory.

After I came back home, I just shot my front door and hoped that you would not notice, but you caught me...

I learned my lesion; there are no short cuts in photography...

Once again, thank you very much for your time and comments, much appreciated. I will re-submit Part B soon...

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| Mayur |

| KM 5D | 24-105D | 35 1.4 | 100 2.8M | 200 2.8G | 2x APO II |

| a700+VG | DT 16-105 | 50 1.4 | 70-300G | 70-400G |


Posted By: Maddmack
Date Posted: 08 June 2010 at 00:17
my part B
20mm
http://maddmack.smugmug.com/Other/dominican/12470952_URsZr#893472395_8NJ77-A-LB"> [/IMG]
35mm
http://maddmack.smugmug.com/Other/dominican/12470952_URsZr#893472437_EPBss-A-LB">
100mm
http://maddmack.smugmug.com/Other/dominican/12470952_URsZr#893472478_kypJV-A-LB">
35mm@ 100 view
http://maddmack.smugmug.com/Other/dominican/12470952_URsZr#893472555_W7jSa-A-LB">
35mm @ 20mm view
http://maddmack.smugmug.com/Other/dominican/12470952_URsZr#893472604_uRiaz-A-LB">
I don,t care if i pass this or not, the fact that i posted this with no help is good by me,thank you for all the help. by the way how did i do.




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camera gear, A850, A77 lenses Minolta. 20,2.8 50/2./8 macro 100/2.8 macro 28-75 2.8D
28-135 4-4.5 sony 70/300G 300.HS white f4 500 f8   


Posted By: pegelli
Date Posted: 08 June 2010 at 06:19
How did you do:
First of all on the assignment, you passed part B. You can clearly see (between the first and the last, and between the 3rd and 4th) that even though the subject is about equal size that the perspective (relation to the background) is changed due to your position change.

Second on the posting, near flawless, only one time [/IMG] too many after the first picture, but that's not really important.

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Posted By: Maddmack
Date Posted: 09 June 2010 at 14:25
part c






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camera gear, A850, A77 lenses Minolta. 20,2.8 50/2./8 macro 100/2.8 macro 28-75 2.8D
28-135 4-4.5 sony 70/300G 300.HS white f4 500 f8   


Posted By: moo-ha-ha
Date Posted: 09 June 2010 at 17:15
Here is my second try at Part B.

Part B
[1] WA @ 24mm, f/11, 1/250s, ISO200

[2] Normal @ 35mm, f/9, 1/320s, ISO200

[3] Tele @ 105mm, f/8, 1/320s, ISO200

[4] Normal to match WA @ 35mm, f/10, 1/200s, ISO200

[5] Normal to match Tele @ 35mm, f/9, 1/250s, ISO200




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| Mayur |

| KM 5D | 24-105D | 35 1.4 | 100 2.8M | 200 2.8G | 2x APO II |

| a700+VG | DT 16-105 | 50 1.4 | 70-300G | 70-400G |


Posted By: pegelli
Date Posted: 11 June 2010 at 06:06
That's the 3D perspective we like in part B. You've now successfully passed all parts of the perspective assignment moo-ha-ha.

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Posted By: Maddmack
Date Posted: 11 June 2010 at 23:43
Did you get a chance to look at the last two pics
on page 2?

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camera gear, A850, A77 lenses Minolta. 20,2.8 50/2./8 macro 100/2.8 macro 28-75 2.8D
28-135 4-4.5 sony 70/300G 300.HS white f4 500 f8   


Posted By: pegelli
Date Posted: 12 June 2010 at 06:18
Originally posted by Maddmack Maddmack wrote:

Did you get a chance to look at the last two pics
on page 2?


Oops, missed those. A pass on part C, good job of getting the distractions out of the scene with just a slight different viewpoint.

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Posted By: dleo6446
Date Posted: 17 June 2010 at 21:02
Part A
A100, Beercan Distance about 200 yards


A100, 50mm 1.7 Distance about 200 yards


B and C to follow shortly

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A100 | 35-70mm 4 | 50mm 2.8 | 100-200mm f4.5 | 70-210mm f4 | 50mm 1.7


Posted By: pegelli
Date Posted: 17 June 2010 at 21:29
A pass for part A, and the 50 mm shot is still pretty detailed and sharp for a crop. I've seen lots worse crops in this assignment.

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Posted By: dleo6446
Date Posted: 06 July 2010 at 16:15
Part "B"
35mm, F4, ISO Hi200, 1/1000 Wide Angle (Widest I have at the moment)


50mm 1.7, ISO Hi200, 1/1000 Normal


100mm 4.5, ISO Hi200, 1/1000 Tele (Minolta 100-200mm)


50mm 1.7, ISO Hi200 1/2000 Normal Mimic WA


50mm 1.7, ISO Hi200, 1/2500 Normal Mimic of Tele


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A100 | 35-70mm 4 | 50mm 2.8 | 100-200mm f4.5 | 70-210mm f4 | 50mm 1.7


Posted By: dleo6446
Date Posted: 06 July 2010 at 16:16
OOPS, forgot to size properly, my apologies


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A100 | 35-70mm 4 | 50mm 2.8 | 100-200mm f4.5 | 70-210mm f4 | 50mm 1.7


Posted By: bms44974
Date Posted: 07 July 2010 at 01:39
@dleo6446: Leo, you have some of Part B done, but not quite all. The assignment asks for your three first shots (#s 1,2, and 3), then a normal (in your case 50mm) shot to mimic the tele (you've done that part well with #4) AND a shot at 50mm to mimic the WA. That's the one your missing. Please provide the missing shot and we'll call Part B complete.

Cheers... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: dleo6446
Date Posted: 07 July 2010 at 03:08
Thank you Brian. I have updated the post with the identifications of the images. #1 is wide, #2 is Normal, #3 is Tele, #4 is Normal Mimic of WA, and #5 is Normal mimic of Tele. I should have properly identified them...my bad!

Thanks,
Leo

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A100 | 35-70mm 4 | 50mm 2.8 | 100-200mm f4.5 | 70-210mm f4 | 50mm 1.7


Posted By: bms44974
Date Posted: 07 July 2010 at 12:02
@dleo6446: Thanks, Leo! For that, you get a pass on Part B. Looking forward to your Part A and Part C entries.

Cheers... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: alphatini
Date Posted: 15 November 2010 at 21:17
here is my attempt for part A

250.0mm (équivalence 35mm : 375mm)
f/10.0
0.167 s (1/6)
ISO : 400



28.0mm (équivalence 35mm : 42mm)
f/10.0
0.167 s (1/6)
ISO : 400





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^_^


Posted By: pegelli
Date Posted: 16 November 2010 at 06:30
alphatini, I think you have to crop the 28 mm shot even tighter. The logs are smaller and there's background in there (for instance the pole with the electricity box on it) that doesn't show in the tele shot.

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Posted By: HiDesert
Date Posted: 27 November 2010 at 03:54
All right, here's a shot at part A.

The first shot is at 200mm.


The second shot is a center crop from a 16mm shot. It primarily shows why everyone says you shouldn't use digital zoom on point and shoot cameras:


I have to say, I don't think I see the effect that this exercise is meant to demonstrate. Unless it's meant to show that if you crop down the wide angle enough, the effect goes away. But the only real difference I see between these two is resolution.

-------------
Faecorum semper, solum profundum variat. A700, Tokina 11-16, Tamron 17-50, Sony 35mm F1.8, Sony 70-300G, and a few others that don't get used nearly as much


Posted By: pegelli
Date Posted: 27 November 2010 at 08:46
HiDesert, you passed part A, well done.

The objective is to show that perspective (relation between foreground and background subjects) is determined by the place you stand, and not by the focal lenth. So the two pictures are supposed to be identical (after cropping)

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Posted By: HiDesert
Date Posted: 27 November 2010 at 16:13
Well then, QED!      On to part B...

-------------
Faecorum semper, solum profundum variat. A700, Tokina 11-16, Tamron 17-50, Sony 35mm F1.8, Sony 70-300G, and a few others that don't get used nearly as much


Posted By: HiDesert
Date Posted: 05 December 2010 at 01:52
Part B:

16mm shot:


35mm backed off to match the 16mm (in terms of the framing of the left tree, with the statue centered in the shot):


But one can also match the 16mm shot by trying to get the statue to about the same size, which produces this:


So when you say "match the wide angle shot, does that mean match in terms of the size of the central subject, or the perspective of the other features of the shot? But I imagine that's the point; change the distance, and you'll never match the shot, because we're in a three dimensional world.


70mm shot:


35mm advanced to match the 70mm:


There's less problem here than at wide angle, because the difference between 35mm and 70mm isn't as great a change in visible angle as between 16mm and 35mm. From the original position, the distance you have walk back to (approximately) match the wide angle shot is more than the distance you have to walk forward to match the tele shot. The interesting thing about 16mm, 35mm, and 70mm is that there's a factor of two difference between both consecutive pairs. I'm suddenly wishing I'd measured the distances...

This is a very different exercise from the others, but it's very interesting too; I'd toyed with the idea of doing this sort of thing before I got to this exercise.

So, have I passed, or have I excceded the verbiage limit?

-------------
Faecorum semper, solum profundum variat. A700, Tokina 11-16, Tamron 17-50, Sony 35mm F1.8, Sony 70-300G, and a few others that don't get used nearly as much


Posted By: pegelli
Date Posted: 05 December 2010 at 09:06
Originally posted by HiDesert HiDesert wrote:

Part B:
So, have I passed, or have I excceded the verbiage limit?


I would say both

No, just kidding, I think with the verbage you've exactly further explained the whole point of this piece of the assignment and you've passed with flying colours with the pictures.

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Posted By: bigsi
Date Posted: 10 April 2011 at 10:52
Here are my efforts at A, off to sort out B and C now, cheers!





18mm cropped


http://www.flickr.com/photos/59871184@N07/5605169647/"> [/IMG]
and 135mm

http://www.flickr.com/photos/59871184@N07/5605169475/"> [/IMG]

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You win or you learn....


Posted By: pegelli
Date Posted: 10 April 2011 at 11:18
Bigsi, I had to go back to Flickr to see the exif, but indeed a pass. The top shot is with a 135 while the cropped shot was with 18 mm. Lot's of differences is sharpness and detail, but the perspective is equal. On to part B!

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Posted By: bigsi
Date Posted: 10 April 2011 at 11:22
Thanks pegelli, appologies for not including the exif, will remember next time

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You win or you learn....


Posted By: pegelli
Date Posted: 16 April 2011 at 06:47
bigsi, your photo's don't show anymore. Did you move them to another place in Flickr?

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Posted By: bigsi
Date Posted: 17 April 2011 at 10:50
whoops! I was messing about in flicker and may have changed the settings (dont really know what Im doing!). I'll get them back up

-------------
You win or you learn....


Posted By: bigsi
Date Posted: 17 April 2011 at 21:23
Here we go with part B. I was fighting nettles and cornish hedges to get the angles the best I could, but no matter as I was surprised at the effects of using different focal lengths had on the composition.

28mm

http://www.flickr.com/photos/59871184@N07/5628799784/"> [/IMG]

50mm

http://www.flickr.com/photos/59871184@N07/5628799390/"> [/IMG]

100mm

http://www.flickr.com/photos/59871184@N07/5628218829/"> [/IMG]

Moving back with 50mm to get 28mm shot, tried to keep the tree the same size

http://www.flickr.com/photos/59871184@N07/5628800266/"> [/IMG]

Moving forward with 50mm to get 100mm shot, again, used the tree as the reference

http://www.flickr.com/photos/59871184@N07/5628801080/"> [/IMG]



-------------
You win or you learn....


Posted By: pegelli
Date Posted: 18 April 2011 at 04:47
Got part B right as well bigsi. On to part C!

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Posted By: bigsi
Date Posted: 18 April 2011 at 18:16
Thanks pegelli, much appreciated

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You win or you learn....


Posted By: bigsi
Date Posted: 20 April 2011 at 22:26
Taa daaaa! Part C at last, watch this fail...

Visited a local churchyard, saw the evening light shining through some beech trees and onto the gravestones

http://www.flickr.com/photos/59871184@N07/5638895966/"> [/IMG]


I got lower, I wanted the path to guide you through the shot to the flowers which meant I couldn't avoid the manhole cover completely, but hopefully enough for it not to be too much of a distraction.

http://www.flickr.com/photos/59871184@N07/5638318999/"> [/IMG]

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You win or you learn....


Posted By: pegelli
Date Posted: 22 April 2011 at 04:32
bigsi, you got it, allthough the first isn't the worst picture/framing either. The light headstones immediately grap your attention. But I agree the second is better so you've now passed this assignment in full.

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Posted By: bigsi
Date Posted: 22 April 2011 at 22:14
Thanks pegelli, really enjoying these

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You win or you learn....


Posted By: trouty00
Date Posted: 07 May 2011 at 20:28
I have to admit I struggled with part B a little trying to get the same output but hopefully its accepted, I will be trying this one again I think though. All shot taken today

Part A.
1.
Camera     Sony DSLR-A580
Exposure     0.01 sec (1/100)
Aperture     f/11.0
Focal Length     200 mm


2.Camera     Sony DSLR-A580
Exposure     0.01 sec (1/100)
Aperture     f/11.0
Focal Length     18mm



Part B.
Orignals
Camera     Sony DSLR-A580
Exposure     0.006 sec (1/160)
Aperture     f/11.0
Focal Length     18 mm


Camera     Sony DSLR-A580
Exposure     0.01 sec (1/100)
Aperture     f/11.0
Focal Length     35 mm


Camera     Sony DSLR-A580
Exposure     0.006 sec (1/160)
Aperture     f/11.0
Focal Length     100 mm


Walk forward
amera     Sony DSLR-A580
Exposure     0.017 sec (1/60)
Aperture     f/11.0
Focal Length     35 mm


Walk Backwards
Camera     Sony DSLR-A580
Exposure     0.005 sec (1/200)
Aperture     f/11.0
Focal Length     35 mm


Part C
Just Shoot!
Camera     Sony DSLR-A580
Exposure     0.004 sec (1/250)
Aperture     f/5.6
Focal Length     50 mm


Left & Up!
Camera     Sony DSLR-A580
Exposure     0.002 sec (1/640)
Aperture     f/5.6
Focal Length     50 mm


Wanted to get rid of the ugly block flat building behind and had cut of the lamp.

look forward to your response....


Posted By: bms44974
Date Posted: 09 May 2011 at 22:20
@trouty00: You get a pass on Part A, although it would have been nice to see the second image at the same scale as the first.

For Part B, you nailed the walk forward, but it appears that you went back too far back on the 35mm to match the field of view for the 18mm. The boat appears about half again bigger at 18mm than at 35mm and you included a large yellow pole and what appear to be railroad ties in the 35mm shot that did not appear in the 18mm shot.

For Part C, you were right to try to avoid the block building in the background, but you needed to move a bit more to your right (and perhaps back) so as to get the entire foreground structure and lamp in the frame.

I'm going to ask you to try again on the "walk back" section of Part B and try again on Part C (a new second shot at the same location or two new shots).

Cheers... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: trouty00
Date Posted: 10 May 2011 at 13:21
Thank Brian, I did get a bit confused with part B as dint know if I was supposed to be getting the 'same shot' which I just could not manage to do which I have to admit drove me a little crazy so I shot what i thought and moved on. Through reading through previous posts on this thread I guess the intention is to match the size of subject (the boat in this case) rather than replicate the image. Is this correct? I think I will go back and try again with same subject for the walk back part but think it will be inevitable that the yellow post will show up as i was pretty much in line with it for the 18mm shot


as for Part C I completely misunderstood this one, I thought it was implying only the camera could be moved and I had to be stood still hence I tried to make best of what options I had. Think I will do this one again completely.

as for the sizing, problem I had was beacause the crop was so small as original shot was at 200mm opposed to 18mm the crop went was small, I have took the smaller ones shown below...





Posted By: bms44974
Date Posted: 10 May 2011 at 16:56
@trouty00: The objective of Part B is to duplicate the field of view. I see that you were trying to achieve this with respect to the background. The difficulty is that your subject was much closer than the background and the relative change in distance was much greater for the boat. I'm considering giving you a pass on Part B just for pointing out this difficulty with the assignment.

Cheers... Brian

-------------
A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: trouty00
Date Posted: 11 May 2011 at 13:43
ok, so are you saying its the FOV which needs to be replciated or thr size of subject. I feel i did get pretty close to the FOV as to me seems similar amount of hedge to the left and water to the right as original image. I do agree the that boat is different size so looking for direction here...


or are we trying to replicate both and maybe because of my original shot and distance from boat may actually be impossible?


Posted By: bms44974
Date Posted: 11 May 2011 at 14:33
Originally posted by trouty00 trouty00 wrote:

...or are we trying to replicate both and maybe because of my original shot and distance from boat may actually be impossible?


My point exactly! It's impossible given the distance between the subject (boat) and background. Pieter (pegelli) and I will have to have a consider modifying the text of the assignment, but you get a pass on Part B for pointing out this difficulty so clearly.

-------------
A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: trouty00
Date Posted: 11 May 2011 at 16:17
excellent, I have been wondering how in movies they retain the size of subject but bring more background into shot or vice versa, I guess this is same principle and they are zooming in whilst moving backward on track. just part c to work on then but a very very interesting lesson so thank you!!


Posted By: mateogrande12
Date Posted: 07 June 2011 at 01:04
Here is my submission for part A

200mm

http://www.flickr.com/photos/matthewhjones/5806561346/" rel="nofollow">
http://www.flickr.com/photos/matthewhjones/5806561346/" rel="nofollow - 200mm_resize by http://www.flickr.com/people/matthewhjones/" rel="nofollow - mateogrande12 , on Flickr

30mm

http://www.flickr.com/photos/matthewhjones/5806561320/" rel="nofollow">
http://www.flickr.com/photos/matthewhjones/5806561320/" rel="nofollow - 30mm_resize by http://www.flickr.com/people/matthewhjones/" rel="nofollow - mateogrande12 , on Flickr


Posted By: bms44974
Date Posted: 10 June 2011 at 02:23
@mateogrande12: That's a pass on Part A, Matt. Looking forward to Parts B & C.

Cheers... Brian

-------------
A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: Bob J
Date Posted: 27 December 2011 at 14:15
Part A:

Reference shot at 26mm with 18-55 kit lens


Same position at 200mm with 70-300 SSM G


Crop of 26mm reference shot (shown above) showing same field of view:


Comparison shows that the wide-angle crop gives an identical FoV to the telephoto - even the depth of field on the wide angle is similarly small at that magnification.

Part B
View taken with wide-angle (18mm)


With 'normal' (35mm)


With telephoto (100mm)


'Telephoto compression' renders further-away objects larger in comparison to nearer objects.

Part C

Shot of figure taken from standing height


Shot of figure from same spot, but crouching down


Crouching allows the hiding of lamp-post and other distracting items in background.

-------------
RBJ ~ http://tinyurl.com/h7uhozk - Moderation on Dyxum


Posted By: bms44974
Date Posted: 01 January 2012 at 16:21
@Bob J: Well done, Bob. Parts A, B, and C all completed with distinction.

Cheers... Brian


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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: DWardCA
Date Posted: 16 June 2012 at 08:06
Now that I own all three types of lenses, I can finally take a stab at this assignment.   Here goes.


Part A: Telephoto Compression

http://www.flickr.com/photos/dwardca/7378084166/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378084166/" rel="nofollow - Assignment #4: Perspective - Part A - Normal
1/30 Sec    f/1.8    35mm    ISO 100    Sony SLT-A65V    Sony 35mm f1.8 SAM

http://www.flickr.com/photos/dwardca/7378084510/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378084510/" rel="nofollow - Assignment #4: Perspective - Part A - Telephoto
1/10 Sec    f/4.0    75mm    ISO 100    Sony SLT-A65V    Minolta 70-210mm f/4.0 (Beercan)

http://www.flickr.com/photos/dwardca/7378273812/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378273812/" rel="nofollow - Assignment #4: Perspective - Part A - Cropped Wide Angle

http://www.flickr.com/photos/dwardca/7378085580/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378085580/" rel="nofollow - Assignment #4: Perspective - Part A - Wide Angle
1/10 Sec    f/2.8    16mm    ISO 100    Sony SLT-A65V    Tokina ATX Pro 11mm-16mm f2.8


Part B: Zoom with your Feet

http://www.flickr.com/photos/dwardca/7378076690/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378076690/" rel="nofollow - Assignment #4: Perspective - Part B - Telephoto
1/8 Sec    f/4.0    210mm    ISO 100     Sony SLT-A65V   Minolta 70-210mm f/4.0 (Beercan)

http://www.flickr.com/photos/dwardca/7378077192/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378077192/" rel="nofollow - Assignment #4: Perspective - Part B - Standard
1/10 Sec    f/4.5    26mm    ISO 100    Sony SLT-A65V    Sony DT 18-55mm F3.5-5.6 SAM (SAL-1855)

http://www.flickr.com/photos/dwardca/7378077610/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378077610/" rel="nofollow - Assignment #4: Perspective - Part B - Wide Angle
1/13 Sec    f/2.8    16mm    ISO 100    Sony SLT-A65V    Tokina ATX Pro 11mm-16mm f2.8


Part C: Hide and Seek

http://www.flickr.com/photos/dwardca/7378133058/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378133058/" rel="nofollow - Assignment #4: Perspective - Part C - Before
1/160 Sec    f/6.3    18mm    ISO 100    Sony SLT-A65V    Sony DT 18-55mm F3.5-5.6 SAM (SAL-1855)

Coming down a steep hill toward a fenced off pipe bridge, I saw down the bridge and stopped, pointed my camera and shot.

http://www.flickr.com/photos/dwardca/7378133822/" rel="nofollow">
http://www.flickr.com/photos/dwardca/7378133822/" rel="nofollow - Assignment #4: Perspective - Part C - After
1/100 Sec    f/5.0    18mm    ISO 100    Sony SLT-A65V    Sony DT 18-55mm F3.5-5.6 SAM (SAL-1855)

Moving to the right, and changing where the camera was aiming, I was able to convey the depth/height more and also show graffiti that was hidden in the previous shot.


EDIT: Forgot to show cropped Wide Angle - added in.


Posted By: bms44974
Date Posted: 16 June 2012 at 13:43
@DWardCA: I'm glad you added the crop since that was the point of Part A. You have an extra image in Part A that was not required (but interesting nonetheless). The DOF and relatively dark exposure in the Part A telephoto shot makes it hard to see the compression. The swingset does appear to be farther away in the cropped shot. So... there's your pass on Part A. Parts B and C are executed perfectly! You picked a particularly good subject in Part B and retained the size of the subject in the frame for all three shots. Well done.

Cheers... Brian

-------------
A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: DWardCA
Date Posted: 16 June 2012 at 17:03
Originally posted by bms44974 bms44974 wrote:

The DOF and relatively dark exposure in the Part A telephoto shot makes it hard to see the compression.

LOL That was another lesson in itself: Just how bright fast lenses are.   I took these shots as the sun was going down. I went from my f1.8 prime to my f4.0 telephoto and it was soooo dark. I was decreasing shutter speed but there were some kids that were wanting to use my subject.

I loved Part B. I had just got my telephoto two days ago and hadn't had a real chance to use it. Part B really demonstrates how you can use each lens.

I originally started this exercise in the park with a caboose display .. but I realized quite quickly that larger objects don't work so well for this exercise.


Posted By: mike77
Date Posted: 21 February 2013 at 16:25
Part A:

Wide angle at 28mm, F8:


Telephoto at 230mm, F8:


----------------
Part B:

135mm:


35mm:


18mm:


----------------

Part C:



Now shot through the fence, which gives a much better shot. Reading the rules again, I might have not done it correctly though because I moved about 2m to the right.



-------------
A99, NEX-C3, HVL-F43M, more than enough glass (A, E, M42, MD)


Posted By: pegelli
Date Posted: 23 February 2013 at 16:37
I'll grant you the pass mike77, maybe a step too much for part C, but a very good demonstration ofhow taking a different viewpoint can create a better picture.

On part A I also find it interesting how sharp your cropped 28 mm picture is and how good you can see that cropping (or a smaller sensor) has more dof vs. the same view on a larger sensor.

-------------
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Posted By: waldo_posth
Date Posted: 03 September 2013 at 05:35
Here are my first attempts for the basic assignment #4:

Part 1

Minolta AF APO HS F/2,8 200mm




Minolta AF F/2,8 20mm full size




Minolta AF F/2,8 20mm crop




Part 2

Minolta AF F/2,8 20mm




Tamron AF V/3,5-5,6 24-135mm at 35mm




Tamron AF V/3,5-5,6 24-135mm at 85mm





Tamron AF V/3,5-5,6 24-135mm at 35mm step back




Tamron AF V/3,5-5,6 24-135mm at 35mm step forward




Part 3

First try




Moving up




Second try




Moving right




Thank you for taking the time to view and criticize my contribution!

-------------
"Stare, pry, listen, eavesdrop. Die knowing something. You are not here long." (Walker Evans)    http://www.flickr.com/photos/waldo_posth/ - http://www.flickr.com/photos/waldo_posth/


Posted By: pegelli
Date Posted: 13 September 2013 at 18:55
Waldo, part A is flawless.

for Part B you really need to take 1 subject and move forward while shortening your focal length (or vice versa), keeping the chosen subject the same size in the frame and see how the relation between foreground and background changes. With your series it's a bit of a mix of all sizes, subjects and distances so pls. try that again in a more systematic manner.

Also not sure on part C. In the first try such a low perspective is usually not how you just walk (crawl ) along the street, and then stand up and take a shot from eye-level to get rid of the fence.
In the second try I actually find the first picture better, because the building on the right distracts me as a viewer, so that's another part I would like you to try again.

-------------
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Posted By: Atom Ant
Date Posted: 10 November 2013 at 09:57
I've decided to skip Assignment 3 while I wait for inspiration to strike. So here is my submission for Assignment 4, Part A. (I'll submit parts B & C separately.)

First, here's the version taken with the long lens. Data is: SLT-A58, Minolta AF 75-300mm lens at 200mm, 1/320, F5.6, ISO 160.


Second, here's the version from a short lens cropped. Data is: SLT-A58, SAL 18-55mm lens at 26mm, 1/200, F6.3, ISO 100.


In this instance I don't think I need comments on the artistic merit of the shots.


Cheers
Tony


Posted By: bms44974
Date Posted: 10 November 2013 at 12:29
@Atom Ant: Tony, apart from the increased DOF in the second shot, I'm having some trouble seeing the telephoto compression in the first shot. Would you mind confirming the exif or using embedded or linkable exif data in your post? Thanks... Brian

-------------
A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: Atom Ant
Date Posted: 11 November 2013 at 01:06
Hi Brian

I guess the background is probably a bit too far away to see telephoto compression well.

Here are links to the EXIF from Flickr:

http://secure.flickr.com/photos/77482396@N08/10774169863/meta/ - http://secure.flickr.com/photos/77482396@N08/10774169863/meta/
http://secure.flickr.com/photos/77482396@N08/10773913435/meta/ - http://secure.flickr.com/photos/77482396@N08/10773913435/meta/


Cheers


Posted By: Atom Ant
Date Posted: 11 November 2013 at 02:05
I've just been thinking about this & I'm confused. I thought the point of this exercise is that the perspective should be the same in the 2 photos. That is, because "telephoto compression" is just a function of where you are standing (not the focal length), the crop from the small lens should show it as well.

Have I misunderstood?


Cheers
Tony


Posted By: bms44974
Date Posted: 15 November 2013 at 22:09
@Atom Ant: Sorry, Tony. It was my confusion. The effect I described would require you to try to capture the same field of view with a wider angle lens from a shorter distance. The effect is not apparent in the crop.

Cheers (and a Part A pass)... Brian

-------------
A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: Atom Ant
Date Posted: 16 November 2013 at 02:34
On to Part B then...

First, the medium lens from the starting position:

And here's the https://secure.flickr.com/photos/77482396@N08/10878498043/meta/ - EXIF

Second, here's the long lens from the starting position:

And here's its https://secure.flickr.com/photos/77482396@N08/10878171725/meta/ - EXIF

Third photo was wide lens from the starting position:

Here's the https://secure.flickr.com/photos/77482396@N08/10878153655/meta/ - EXIF

Fourth photo is the close shot with the medium lens. (Compare with shot 2.)

https://secure.flickr.com/photos/77482396@N08/10878506943/meta/ - EXIF

Finally here's the distant shot with the medium lens (cf shot 3).

https://secure.flickr.com/photos/77482396@N08/10878197286/meta/ - EXIF

I guess I should start thinking about part C...

PS Brian, thanks for the pass & the clarification. I appreciate the time you all put in to this.

Cheers
Tony


Posted By: bms44974
Date Posted: 16 November 2013 at 12:33
@Atom Ant: Nicely done, Tony! The compression I was previously (and incorrectly) referring to earlier is evident when comparing the second and fourth shots in your Part B entries. The tree in #2 (telephoto) appears much closer to the pole than in #4 despite the fact that the subject pole is approximately the same size in the frame. Part C should be as easy as a walk in the park (literally). Cheers... Brian


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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: Atom Ant
Date Posted: 20 November 2013 at 07:24
Now for Part C...

As proposed I went for a walk in the park (albeit a different park). Here's the first shot:

And the https://secure.flickr.com/photos/77482396@N08/10957388776/meta/in/photostream - EXIF

I then went for quite a long walk (should have chosen a subject that was closer ) to try to hide a building in the background & allow me to move the frame left while keeping some stuff out of frame. Thus the second shot:

And the https://secure.flickr.com/photos/77482396@N08/10957476494/meta/in/photostream - EXIF .

Cheers
Tony


Posted By: bms44974
Date Posted: 20 November 2013 at 11:45
@Atom Ant: And well worth the effort! Nice photo and a pass on the assignment.

Cheers... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: MoonGazer
Date Posted: 21 March 2014 at 11:07
Part A
Two shots of a bird feeder with three fat balls about half way to a summer house. Boring and certainly not picturesque but I was trying to make the effect obvious.
Both shots taken 21st March with A33 f11 and 1/20 equivalent FL of 200mm and 27mm respectively




John


Posted By: bms44974
Date Posted: 21 March 2014 at 22:39
@MoonGazer: Hi John, can you add some exif to these shots? Thanks... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: MoonGazer
Date Posted: 22 March 2014 at 15:30
Hi Brian,
Odd no EXIF as T thought I did just same as previous assignments.
Anyway now added.

If EXIF does suddenly appear it will say 200mm for first shot.
This was taken with old Minolta 80-200 lens which was given to me after it had been dropped in the Pacific.
I took it apart as the the innermost lens surface was very dirty. I cleaned all the surfaces but the contrast is still not same as 18-55 kit lens used for other picture. Putting it back together I damaged some tiny beryllium copper fingers which report the focal length. So now regardless of what focal length is used the EXIF will say 200.
The shot was taken set at the 135 mark.

Thanks for your time.
John



Posted By: MoonGazer
Date Posted: 24 March 2014 at 15:57
All taken with A33. FL given is actual not equivalent

Part B - Zoom with your feet


(1) 18mm f9 1/125


(2) 35mm f9 1/100


(3) 70mm f9 1/125


(4) 35mm f9 1/125 same FOV as (3)


(5) 35mm f9 1/100 same FOV as (1)




Part C Hide and seek (revised 28th March 2014)


28mm f4.5 1/500 -0.7ev



Lower and right a bit
28mm f4.5 1/1600 -0.7ev

John


Posted By: bms44974
Date Posted: 30 March 2014 at 15:20
@MoonGazer: Well done on all counts, John. That's a pass. Cheers... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: MoonGazer
Date Posted: 30 March 2014 at 19:35
Dear Brian
Thank you.
I know I will find the next assignment much harder.
Best wishes
John


Posted By: bigwave
Date Posted: 05 June 2014 at 04:57
Part A: Telephoto compression
210mm
http://s1332.photobucket.com/user/bigwavephoto/media/14369672833_e05a4455ae_o.jpg.html">

24mm cropped to match 210mm
http://s1332.photobucket.com/user/bigwavephoto/media/14163005667_450a78b4d1_o.jpg.html">

Part B: Zoom with your feet
28mm
http://s1332.photobucket.com/user/bigwavephoto/media/14163014207_67db42ac9b_o.jpg.html">

Walking backwards at 50mm to match 28mm
http://s1332.photobucket.com/user/bigwavephoto/media/14162839369_d08609f8fb_o.jpg.html">

70mm
http://s1332.photobucket.com/user/bigwavephoto/media/14326371736_beba19beb7_o.jpg.html">

Walking forwards at 50mm to match 70mm
http://s1332.photobucket.com/user/bigwavephoto/media/14163016567_09b541e121_o.jpg.html">

Part C: Hide and seek
http://s1332.photobucket.com/user/bigwavephoto/media/14346160891_522c9e3ccb_o.jpg.html">

Repositioned
http://s1332.photobucket.com/user/bigwavephoto/media/14369679833_947bebd44c_o.jpg.html">


Posted By: bms44974
Date Posted: 20 June 2014 at 01:11
@bigwave: Sorry for taking so long to get back to you. You have a solid pass here!

Cheers... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: clk230
Date Posted: 16 August 2014 at 20:50
Part A. "Telephoto Compression"

Looking down at First Beach in Newport, RI. The cropped wide angle image (#2) shows the same perspective as the telephoto (#1). The large crop (16 vs 200mm) has magnified the noise in the wide angle photo. I also neglected to control for exposure between the two photos.

#1 Sony A390 Minolta 100-200mm at 200mm


#2 Sony A390 Sony 16-50mm at 16mm (cropped)


#3 original (uncropped) wide angle


Posted By: Pirate
Date Posted: 17 August 2014 at 00:07
Thruxton truck racing day. This was taken sat on my butt with A700 + Sigma AF 17-70mm F/2.8-4.5 DC Macro.



F/8 : ISO 160 : 1/125 sec (hand held) : 17mm : Centre Weighted : Aperture Priority : +/- EV = 0

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http://www.fluidr.com/photos/kopczewski - Fluidr http://www.airplane-pictures.net/photographer.php?p=4091 - Airplane-Pictures


Posted By: pegelli
Date Posted: 17 August 2014 at 07:27
@ clk230, part A passed with flying colours

@ Pirate, http://www.dyxum.com/dforum/new-basic-assignment-4-perspective_topic57086_post630808.html#630808 - did you read the objective and instructions of this assignment on page 1? . I's a nice shot, but I can't figure out how it fits here.

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Mind the bandwidth of others, don't link pictures larger then 1024 wide or 960 pix high, http://www.dyxum.com/dforum/picture-size-for-posting_topic114856_post1379537.html#1379537 - see here


Posted By: clk230
Date Posted: 23 August 2014 at 22:44
Part B. "Zoom with your Feet"

The subject here is a carved stone sign at Fort Barton in Tiverton, RI. To show how closely I matched the wide and tele perspectives I outlined the stone in the reference shots and copied to the normal shots.

Comparing #1 and #2, walking back to match the wide angle has introduced some foreground interest but has obscured the bench to the left of the stone.

Comparing #3 and #4, walking forward to match the tele I think I have inadvertently changed the height of the camera which has changed what is visible in the background. The tele shot better isolates the subject by excluding the objects (trees) that remain within view of the wider normal lens.

#1 Wide angle reference shot - Sony A390 Sony 16-50mm at 16mm


#2 Normal angle lens matching wide perspective from #1 - Sony A390 Sony 16-50mm at 35mm


#3 Telephoto reference shot - Sony A390 Minolta 100-200mm at 100mm


#4 Normal angle lens matching tele perspective from #3 - Sony A390 Sony 16-50mm at 35mm


Posted By: bms44974
Date Posted: 24 August 2014 at 14:57
@clk230: James, I think you were focusing too much on the subject and loosing part of the point of this part of the assignment, "Put the normal lens on the camera and walk straight toward the center of the shot until you get a field of view similar to what you saw with the tele lens. Shoot it. Now walk straight backward until you get a field of view similar to what you saw with the WA lens." We would like you to duplicate the field of view, not just the size/position of the subject.

In the first pair (#1 & #2) the tree to the left of the bench in #2 should have been in the same position on the extreme left of the frame as in #1. For the second pair, the position of the trees behind the marker have shifted to the right.

You will have better results for this assignment if you keep the camera on the same line between subject and camera. That is why we suggest a level shot. If you are shooting up or down from the starting position. the line may be too high or too low when you back up for the "normal" shot of the wide-angle view. Please try Part B again.

Cheers... Brian

P.S. Your entries for Part A were well done.

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4


Posted By: clk230
Date Posted: 24 August 2014 at 18:40
@bms44974: Yes, you're correct Brian I was totally focussed on the subject. I'll give this one another try! So what we're trying to do is match the field of view in the plane of the subject like in picture below.



Posted By: clk230
Date Posted: 27 August 2014 at 03:27
OK, here's another attempt at part B this time using the tripod and walking directly towards and away from the subject to match the wide and tele fields of view with the camera level.

16mm


walking back at 35mm to match 16mm


100mm


walking forward at 35mm to match 100mm


Posted By: bms44974
Date Posted: 06 September 2014 at 15:08
@clk230: Sorry for the delay in responding. You presented a nice illustration and demonstrated your understanding in the images. So... On to Part C!

Cheers... Brian

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A7rIV; A7rII; A6500; A77; SEL2470Z; SEL90M28G; SEL100400GM; SELP1650; SAL70300G; CZ1680; LA-EA4



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