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New Basic Assignment #4: Perspective

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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post Topic: New Basic Assignment #4: Perspective
    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




Edited by pegelli - 24 March 2010 at 07:00
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Berean View Drop Down
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Post Options Post Options   Quote Berean Quote  Post ReplyReply Direct Link To This Post 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]

Edited by Berean - 04 February 2010 at 22:15
Can't you see? It all makes perfect sense, expressed in dollars and cents, pounds, shillings and pence: Roger Waters.

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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote Berean Quote  Post ReplyReply Direct Link To This Post 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.
Can't you see? It all makes perfect sense, expressed in dollars and cents, pounds, shillings and pence: Roger Waters.

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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote goldsmid Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote goldsmid Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote goldsmid Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post 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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Post Options Post Options   Quote Dudger Quote  Post ReplyReply Direct Link To This Post 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
Dave

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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post 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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