Re: kodak infrared asa 640

[Eckhard Stephan <eckhard.stephan@xxxxxxxx>]

Amisol wrote:
> 
>   Hi  Can any one help me I just shot a roll of Kodak infrared at 640 ASA
> what would be development time in D76 straight.
> Solli

As Gary said - it depends on what filter you used and what is your
normal ISO setting for HIE. You may calculate your dev. time from the
following rule of thumb:

Push processing +1 aperture stop (e.g. ISo 100 to ISO 200): Normal dev.
time plus 20%

+2 aperture stops (practically very difficult - large grain, high
contrast and little mistake tolerance): normal time plus about 35%. 

If you want to be on the safe side, you should probably sacrifice some
frames for a test run. It's better to loose one or two shots than to
ruin a whole film...

Hope that helps.

Eckhard

-- 
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*          Eckhard Stephan             * 
*          Freiburg (Germany)          *
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