You wrote:
<< Question. If I shoot Tri-X (or Agfapan 400 or Delta 400) at 200 to
open up some shadow detail, do I tell him to "pull" process it or ask him to
process
it normally?
>>
It seems a lot of people shoot Delta 400 at 200 ASA .
The Delta literature (eg. see Ilford's website:
http://www.ilford.com/html/us_english/pdf/400_Delta.pdf) includes recommended
development for a variety of ASA's from 200-1600 in many film developers and
dilutions. ASA Values outside that range are given but not recomended.
As far as your question on shadow detail, they also have a lot of fine
tuning information on adjusting development for different desired
contrast.The contrast information is also given in terms of equivalent paper
contrast grade so you can have a more gut level feel for what say a 5%
contrast change etc means.
Regards,
>> Tim Hughes <<
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