New Basic Assignment #4: Perspective

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Posted: 22 April 2011 at 22:14

Thanks pegelli, really enjoying these

Make it a great day

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trouty00

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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....

bms44974

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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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trouty00

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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...

bms44974

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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

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trouty00

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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?

bms44974

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Posted: 11 May 2011 at 14:33

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.

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trouty00

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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!!

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Posted: 07 June 2011 at 01:04

Here is my submission for part A

200mm

200mm_resize by mateogrande12, on Flickr

30mm

30mm_resize by mateogrande12, on Flickr

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Posted: 10 June 2011 at 02:23

@mateogrande12: That's a pass on Part A, Matt. Looking forward to Parts B & C.

Cheers... Brian

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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 ~ Moderation on Dyxum

bms44974

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