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New Basic Assignment #4: Perspective

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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 06 July 2017 at 00:42
@Blue-Eyed Monkey:

Part A: It is hard to evaluate telephoto compression when there is only one object in focus. I also noted that you changed from f8 on the first shot to f22 on the second. The subject and some background must be in focus to be able to evaluate this portion of the assignment. Please try this part again.

Part B: The 24mm backed-out to 50mm is fine. The aspect ratio for the 210mm and up-close 50mm are not close enough and the 210mm is OOF. You may need to increase the f-value for the 210mm shot and make sure that you can reproduce the aspect ratio with the 50mm without running into the minimum focus distance. Think about using 100mm rather than 210mm if this is a problem.

Part C: I'll give you a pass on Part C. You certainly moved quite a ways to your left to get the second shot. Normally, we expect a more subtle shift in camera position, but you captured the spirit of the assignment.

Cheers... Brian
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Post Options Post Options   Quote Blue-Eyed Monkey Quote  Post ReplyReply Direct Link To This Post Posted: 21 July 2017 at 16:40
Another attempt at Part A of this assignment. I still need to retry Part B but I haven't been happy with my tries so far!


Beercan - 1/25s f/11 ISO400 210mm

Sigma 18-50mm 2.8 - 1/25s f/11 ISO400 18mm
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 23 July 2017 at 00:26
@Blue-Eyed Monkey: That works for Part A, Glen. On to Part B

Cheers... Brian

P.S. The second could use a bit of noise reduction.
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Post Options Post Options   Quote Blue-Eyed Monkey Quote  Post ReplyReply Direct Link To This Post Posted: 26 July 2017 at 20:10
Thanks once again Brian. I've retried Part B of the assignment and although I only needed the close-up part of it, I thought I might as well retry the whole!

Part B. "Zoom with your Feet"
Original scene with normal lens

Taken with Minolta 50mm F1.7 @ 1/160s f/11 ISO200 50mm

Telephoto lens

Taken with beercan @ 1/80s f/11 ISO200 210mm

Normal lens close up

Taken with Minolta 50mm F1.7 @ 1/50s f/11 ISO200 50mm

Wide Angle lens

Taken with Sigma 18-50 F2.8 @1/500s f/11 ISO200 18mm

Normal Lens further away

Taken with Minolta 50mm F1.7 @ 1/80s f/11 ISO200 50mm

I'm not sure if the wide angle and normal lens further away is what you are looking for. At first, I didn't see the learning objective of this part of the assignment but having undertaken it I think I understand that it is about how different focal lengths and positions produce different results. It is therefore about choosing the correct focal length and moving rather simply zooming in or out.
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 27 July 2017 at 02:34
@Blue-Eyed Monkey: Hi, Glen. I'm having trouble understanding the "No. 1 Smithery" in the last shot. It does not appear in any of the other shots. Any explanation?

Thanks... Brian
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Post Options Post Options   Quote Blue-Eyed Monkey Quote  Post ReplyReply Direct Link To This Post Posted: 27 July 2017 at 06:38
Where I was closer to the subject it was hidden from view until I stepped back and changed my perspective. The glass structure is about 5m long and the Smithery sign is approximately another 10m beyond that so when I stepped back to photograph the subject my whole field of view altered.
 



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Post Options Post Options   Quote Blue-Eyed Monkey Quote  Post ReplyReply Direct Link To This Post Posted: 28 July 2017 at 22:48
Having had another look back at the task and clk230 on page 7, I've decided that the subject has to be flat or at least narrow for it to work. Apologies for bombarding you but I think that this attempt is probably more what you are looking for than the last effort!



Scene at 50mm

1/250s f/10 ISO400 50mm

Scene with telephoto

1/30s f/10 ISO400 200mm

Zoomed in with 50mm

1/100s f/10 ISO400 50mm

Scene with wide angle

1/250s f/10 ISO400 18mm

Zoomed out with 50mm

1/250s f/10 ISO400 50mm
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 29 July 2017 at 00:14
@Blue-Eyed Monkey: This entry is exactly what the assignment requires! Well done, Glen.

Cheers... Brian
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Post Options Post Options   Quote Blue-Eyed Monkey Quote  Post ReplyReply Direct Link To This Post Posted: 30 July 2017 at 16:51
Thanks for the comments and your time once again, Brian. Onto the last of the Basic Challenges...
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Post Options Post Options   Quote Phil Wood Quote  Post ReplyReply Direct Link To This Post Posted: 25 April 2018 at 22:45
Okay, here we go.

Perspective part 1.

100mm


16mm crop


I departed from the instructions a bit - 16mm v 100mm rather than 28mm v 200mm. However, apart from a bit of barrel distortion at 16mm I think it shows the perspective is unchanged as one would expect given that the angle of view is the same.

Taken with A58, Tamron 16-300mm.

Phil

Edited by Phil Wood - 14 May 2018 at 10:10
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Post Options Post Options   Quote Phil Wood Quote  Post ReplyReply Direct Link To This Post Posted: 25 April 2018 at 23:00
Perspective part 2.

To simplify the picture taking I opted for 18/26/70mm using my A58 and a Minolta DT 18-70mm.

Position 1, 18mm


Position 2, 28mm


Position 1, 70mm


Position 3, 28mm


They do show fairly subtle changes of perspective, perhaps not as marked as I would have thought.





Edited by Phil Wood - 14 May 2018 at 10:15
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Post Options Post Options   Quote Phil Wood Quote  Post ReplyReply Direct Link To This Post Posted: 25 April 2018 at 23:05
Perspective, Part 3.

A58, Tamron 16-300 @ 35mm





Remained rooted to the spot and held the camera high to my left to see round the intrustive stalk of whatever in the first shot. Would have preferred to retain a bit of the hedging at the bottom - but my view of the camera display was not conducive to optimum framing!

Phil

Edited by Phil Wood - 14 May 2018 at 10:11
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 27 April 2018 at 22:48
@Phil Wood: Sorry it has taken me a while to get to these, Phil. Parts A & C are good enough for a pass. I'm going to ask you to have another go at Part B. One of the reasons you didn't see much difference in these shots (particularly the second pair) is that the subject is rather flat and parallel to the sensor. Cheers... Brian
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Post Options Post Options   Quote Phil Wood Quote  Post ReplyReply Direct Link To This Post Posted: 28 April 2018 at 21:13
Thanks Brian, I can't say I'm surprised about part B - I was struggling to find a suitable subject. I'll have another go!

Phil
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