Archived posting to the Leica Users Group, 2006/12/06

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Subject: [Leica] Math Question
From: shino at panix.com (Rei Shinozuka)
Date: Wed Dec 6 14:55:37 2006
References: <7.0.1.0.2.20061206152403.027b4508@infoave.net>
 
640 = 160 * 2^2 (stops underexposure)
1280 = 160 * 2^3 (stops underexposure)

-rei

On Wed, 6 Dec 2006 3:57 pm, Tina Manley wrote:
> LUG:
>
> If I take a photo at ISO 160 but underexpose by two stops, what is the 
> effective ISO that I'm using?  How about three stops under?
>
> Thanks,
>
> Tina
>
>
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-rei
In reply to: Message from images at InfoAve.Net (Tina Manley) ([Leica] Math Question)