Archived posting to the Leica Users Group, 2003/12/02

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Subject: Re: [Leica] Formula for calculating f/stops
From: RUBEN BLĘDEL <ruben@rhodos.dk>
Date: Wed, 03 Dec 2003 06:41:20 +0100
References: <003901c3b949$095f5660$6401a8c0@home>

hi Tom

Can open your home page but not the link til the xls file ?

Tom Smart wrote:

>Here's a quickie excel file that will calculate it for you.  It is small
>enough to put on a pocket pc if you'd like to use it in the darkroom.  Just
>put in the value that you want to change in A1:
>
>http://www.Sleepytom.com/fstop.xls
>
>Tom
>
>  
>
>>-----Original Message-----
>>
>>Does someone have a quickie formula from going from % of light
>>transmitted to stops difference from 100%
>>
>>e.g., 50% transmission = -1 f/stop? (that's an easy one but
>>you get the
>>idea)
>>    
>>
>
>--
>To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html
>
>  
>

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In reply to: Message from "Tom Smart" <tom@sleepytom.com> (RE: [Leica] Formula for calculating f/stops)