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Re: [OM] abbreviations

Subject: Re: [OM] abbreviations
From: Thomas Bryhn <thomas.bryhn@xxxxxxxxxx>
Date: Thu, 15 Nov 2001 15:58:59 +0100
At 15:09 15.11.01, John OR wrote:

COC is Circle of Confusion - someting to do with being in or out of focus
and such.

You'll get a more accurate description in due course, I've no doubt


The CoC is the diameter of the biggest circle (on film) you'll accept as "sharp" if you are imaging a point source. For 35mm film a value 0.02-0.03mm is used, and this will define how far out of focus the point can be and still be considered sharp enough, i.e. the depth of field scale on Zuikos.

I think the not-so-technical definition of "Circle of Confusion" is the Ca*on Web Ring...

Thomas Bryhn


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