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RE: [OM] Magnification factors

Subject: RE: [OM] Magnification factors
From: "Robert Gries" <rgg@xxxxxxxxxxx>
Date: Mon, 12 Aug 2002 09:53:55 -0500
So, the f-stop that I want would want on the camera would be the f#
given by incident divided by the m+1?


Effective f# = (m+1)*(marked f#), where m is magnification
In stops, it's log((m+1)**2)/log(2)


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