Compression is Real

Started 11 months ago | Discussions thread
Gerry Winterbourne Forum Pro • Posts: 15,186
Re: With respect to perspective, yes.
2

JackM wrote:

Mike CH wrote:

JackM wrote:

Do you think an image taken at 100mm and another taken at 400mm, from the same position, are comparable images?

Comparable with respect to perspective and "compression" - absolutely. With respect to that attribute, they are close to identical in the parts that are common to both images. Resolution and DoF will differ of course.

Given, of course, that you are shooting in the exact same direction.

But they're not comparable images. Unless you think a landscape can be compared with a portrait.

Of course they are comparable. "Comparable" simply means being capable of being compared and any two pictures an be viewed side by side and compared. You are confusing the ability to be compared with the nature of the comparison.

When we take a picture, we have a certain goal, a certain framing in mind. Using a longer focal length will force you into a position to get more compression in that frame.

Or conversely. You might want compression and choose a focal length to achieve it, which will affect the framing.

But how does one choose? Either by taking a set of pictures of ones own or by looking at other examples and comparing them.

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Gerry
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First camera 1953, first Pentax 1985, first DSLR 2006
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