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Re: [OM] Wide-Angle 'Distortion'

Subject: Re: [OM] Wide-Angle 'Distortion'
From: "Wiese" <wiese@xxxxxxxxxx>
Date: Tue, 5 Oct 1999 17:45:41 +1000
Ack... there I was trying to be clever and ended up on the side of the
'focal length affects perspective' demons - please substitute subject to
camera distance for focal length!  At least I can console myself thinking
I'm in good company - plenty of photo mags and some texts say perspective
changes as a result of focal lenth changes... never mind... and sorry!

Cheers

Andy

------------------------------

Date: Mon, 4 Oct 1999 17:09:56 +1000
From: "Wiese" <wiese@xxxxxxxxxx>
Subject: Re: [OM] Wide-Angle 'Distortion'

There is a formula (which I should really have dug up, but anyway...) for
calculating the correct viewing distance for a print of a photo taken with a
given focal length so perspective is rendered "correctly" - it is the
mismatch of focal length and viewing distance that results in [apparent]
perspective
distortion - the problem is that, for example, the 'proper' distance for a
full-frame head shot with a focal lenth in the teens (with 35mm) ends up
being an inch or two from the page - hardly practical....!

Cheers

Andy




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