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Exploding the Myth of Focal Length and Perspective Compression

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#1 Guest_Jeffbridge_*

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Posted 28 July 2015 - 05:03 AM

No matter what term you use to describe the effect however, the idea that it's due to the focal length of your lens, it isn't entirely true.

#2 justshootit


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Posted 28 July 2015 - 11:28 AM

They leave out an important assumption -- that when changing focal length, you MOVE FORWARD OR BACKWARD TO MAKE YOUR SUBJECT THE SAME SIZE IN THE FRAME AS AT ALL THE OTHER FOCAL LENGTHS YOU SHOOT.

It's this that changes the apparent distance between BG and subject. The video touches on this.

Edited by justshootit, 28 July 2015 - 11:29 AM.

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#3 nwcs


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Posted 01 August 2015 - 02:25 PM

Yeah, this is one of my pet peeves of sorts. How telephotos "flatten" people or wide angle is more 3d. Perspective is perspective regardless of lens. It's only the relationship between observer, object, and background. All the focal length of a lens does is crop the scene. That's why I like zooms, too. Once you find a great perspective you can crop in camera. It's also why I like primes, it forces me to
change perspective.

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