Archived posting to the Leica Users Group, 1999/07/28

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Subject: [Leica] f meaning
From: Summicron1@aol.com
Date: Wed, 28 Jul 1999 15:03:13 EDT
 
In a message dated 7/27/99 3:19:40 PM, you wrote:

>
>Can't answer this - but I have an equally stupid question that I can't find
>the answer for;
>
>What does the 'f' in f-stop stand for? 
>(I've asked people and looked in books, and had to admit to the person who
>asked me - haven't got a clue!)

stands for focal length, or something along those lines. The f-stop actually 
a ratio of the focal length to the width of the lens opening.

ctrentelman
ogden, utah