Archived posting to the Leica Users Group, 2000/03/06

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Subject: RE: [Leica] 50mm f1.5 Nokton question
From: Larry Kopitnik <kopitnil@marketingcomm.com>
Date: Mon, 6 Mar 2000 16:29:55 -0600
 
>>>>>>>>>>
I'm curious...How does one calculate these "stop fractions?"
<<<<<<<<<<

There's a nifty little calculator you can download that does all sorts of
photography-related calculations. The Windows version can be downoaded from
http://www.cyberport.com/~tangent/photo/fcalc/index.html and there's a link
at that site to a Mac PowerPC version.

According to this calculator, 1/10 stop past f/1.4 is f/1.45. f/1.5, it
says, is 2/10 stop.

Larry