Archived posting to the Leica Users Group, 2008/01/10

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Subject: [Leica] Obsolete Standards Question
From: sonc.hegr at gmail.com (Sonny Carter)
Date: Thu Jan 10 13:57:02 2008
References: <003401c853d0$a2b4ccc0$e81e6640$@net>
 
I think the formula is  Weston  0.8 x ASA  (ISO)

On 1/10/08, Jim Shulman <jshul@comcast.net> wrote:
>
> I've been pouring through some vintage photo magazines recently, and have
> seen film speeds referenced as Weston readings.  Does anyone have a
> conversion chart of Weston to latter-day ISO ratings?
>
>
>
> Thanks,
>
> Jim Shulman
>
> Bryn Mawr, PA
>
>
>
>
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> Leica Users Group.
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>



-- 
Regards,

Sonny
http://www.sonc.com
Natchitoches, Louisiana
USA
Replies: Reply from philippe.amard at tele2.fr (Philippe AMARD) ([Leica] Obsolete Standards Question)
 In reply to: Message from jshul at comcast.net (Jim Shulman) ([Leica] Obsolete Standards Question)