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[OM] Re: Portra battles

Subject: [OM] Re: Portra battles
From: Andrew Wiese <andrew@xxxxxxxxxxxxxx>
Date: Fri, 6 Jul 2007 04:58:18 -0700 (PDT)

Or smaller crystals - finer grain with the same ISO.


Wayne Harridge wrote:
> 
> 
>> Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
>> 
>> 
>> So I ask, if the photographic sensitivity has been increased, why are 
>> they still ISO 400 and 800 emulsions?
>> 
> 
> It may mean they can get by with less silver in the emulsion and still
> retain the rated ISO.
> 
> ...Wayne
> 
> Wayne Harridge
> 
> http://lrh.structuregraphs.com
> 
> 

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