Camera/Aspect ratio condundrum 2003-12-17 - By Joe Spadaro
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Julian,
I know of no real world camera that measures AOV horizontally but I
am no DP either so some may exist, to my knowledge real world
cameras use the greater of the two film back dimensions. Which is
usually the horizontal.
In the real world camera one would have to do the math if one wanted
to register a 16x:9 shot with a 4x3 shot. But in Maya you have the
choice and in the case Steve's question switching this Attribute
solves his 4 x 3 to 16 x 9 issue.
If a DP uses Trig AOV formulas it is usually to decide on a lens
choice for a given situation, based on distance from subject and
desired AOV. More typically DPs often rely on charts lens
calculators for this purpose.
Joe
>Date: Mon, 15 Dec 2003 08:55:16 +0000
>Subject: Re: Camera/Aspect ratio condundrum
>From: Julian Baum <julian@(protected)>
>
>In a real, presumably film camera, what does Horizontal and Vertical Film
>Fit relate to? I understand that you could calculate FL based on either the
>vertical or horizontal fit, but I guess what I don't get is why practically
>you would need to do one or the other. I know little about film cameras,
>but I am just curious.
>
>Julian.
>
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