New Basic Assignment #4: Perspective

@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

@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.

@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

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

Thanks for the comments and your time once again, Brian. Onto the last of the Basic Challenges...

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

@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