35mm Tri-X is ISO-400, but of course you can increase the exposure
somewhat. Many find that it gives them better shadow detail. It should
be developed normally. Development doesn't really affect speed, it
changes the contrast. However, the densities are also affected so, to
keep the density range the same, exposure must be adjusted.
   Complete data on processing current Tri-X, both the ISO-400 and
the ISO-320 (sheet film) versions, can be found in Kodak booklet
F-4017 which you can find on the Kodak web site at
http://www.kodak.com   type in F-4017 in the search window on the home
page.

Richard Knoppow
Los Angeles, CA. USA
dickburk@ix.netcom.com

Marco,

I recently found an article of 2 French photographers who use it at IE 400
and develop for 14 min. in 1:1.
As I could hardly believe what I saw (and noticed the recommended time is 10
min) I ran a quick test at IE 400
- zones 0-I is clearly distinguishable next to the empty frame: speed is at
least 320
- zone X printed pure white and zone IX printed slightly 'fogged': contrast
seems OK

Did not have the chance to measure out yet, but this wil follow. Prints of
real life subjects look fine on normal grade paper.

Jan