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

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Subject: [Leica] Oyster Roast
From: ricc at mindspring.com (Ric Carter)
Date: Tue Dec 12 17:34:38 2006
References: <7.0.1.0.2.20061211122910.02609bc0@infoave.net> <8mtrn213q9ai8lj4v03b2ft4heig36ij87@4ax.com> <7.0.1.0.2.20061211194850.028c3440@infoave.net> <qpeun2lpbi45ea5oqlt68cnr9gl31ek4oh@4ax.com> <7.0.1.0.2.20061212202515.027bcdc8@infoave.net>
 
One stop is times 2 or divided by 2, depending on the direction.

Ric


On Dec 12, 2006, at 8:27 PM, Tina Manley wrote:

> At 06:29 PM 12/12/2006, you wrote:
>> 2560, by my math.  640 underexposed by one stop would be 1280.   
>> One stop
>> less than 1280 is 2560.
>
> This makes three different formulas that have been used to  
> determine the ISO at 2 stops under with results ranging from 1280  
> to 2560!!  Help!  I am a mathematics impaired person.  Which one is  
> right?
>
> Thanks!
>
> Tina
>
> Tina Manley, ASMP, NPPA
> http://www.tinamanley.com
>
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In reply to: Message from images at InfoAve.Net (Tina Manley) ([Leica] Oyster Roast)
Message from ericm at pobox.com (Eric) ([Leica] Oyster Roast)
Message from images at InfoAve.Net (Tina Manley) ([Leica] Oyster Roast)
Message from ericm at pobox.com (Eric) ([Leica] Oyster Roast)
Message from images at InfoAve.Net (Tina Manley) ([Leica] Oyster Roast)