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[OM] Re: everybody loves a shift lens...

Subject: [OM] Re: everybody loves a shift lens...
From: Jan Steinman <Jan@xxxxxxxxxxxxxx>
Date: Wed, 11 Jun 2003 10:23:24 -0700
>From: "Jeff Keller" <jrk_om@xxxxxxxxxxx>
>
>Focal length just changes the size of the image. There is no change in
>the relative size and placement of objects (perspective)...

But that's the taker's point-of-view. I try to teach students to think in terms 
of the subject.

>Probably the difference in what you're saying is semantics rather than a
>difference in understanding (which I'm pretty good at confusing).

I'd call it more a difference in attitude.

You are, of course, correct in saying that perspective doesn't change if the 
camera-subject distance is unchanged. But (IMHO) that's a rather trivial use of 
focal length, in most cases. (Yea, the "getting closer" part of focal length is 
handy for shooting birds and large carnivores... :-)

I devote a whole unit in my class to having students get used to using focal 
length to alter perspective. They already know how to stand in one place and 
twist the zoom ring! :-)

-- 
: Jan Steinman -- nature Transography(TM): <http://www.Bytesmiths.com>
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