ohnri Posted October 11, 2010 Share #1 Posted October 11, 2010 Advertisement (gone after registration) If I expose Tri-X at 320 do I need to tell the lab or is standard development preferred? Thanks, Bill Link to post Share on other sites More sharing options...
Advertisement Posted October 11, 2010 Posted October 11, 2010 Hi ohnri, Take a look here Tri -X development question. I'm sure you'll find what you were looking for!
mdozier Posted October 11, 2010 Share #2 Posted October 11, 2010 fwiw, my opinion is to tell the lab. By my reckoning 320 is almost 1/2 stop off and it could matter depending on what and where you were shooting. If I were processing it myself I would adjust even though it's minor. Just my opinion. m Link to post Share on other sites More sharing options...
Xmas Posted October 11, 2010 Share #3 Posted October 11, 2010 Hi Pre 1961 Tri-x was 200 ISO, then they changed the rules and made it 400 ISO, cause most people had photo electric meters rather than sunny side f/16 tables or slide rules. I always use 1/3 of a stop over I like shadow details. Noe Link to post Share on other sites More sharing options...
treeplanter Posted October 12, 2010 Share #4 Posted October 12, 2010 If I expose Tri-X at 320 do I need to tell the lab or is standard development preferred? Don't worry about it. I've exposed Tri-X at 320 or 400 for years and would be hard pressed to tell the difference between the two (I process at home using either D-76 or Xtol). There's just too many other variables that come into play to worry about 1/2 of an F-stop. Jim B. Link to post Share on other sites More sharing options...
tobey bilek Posted October 12, 2010 Share #5 Posted October 12, 2010 I do not believe a lab will adjust even if you tell them. In my darkroom, I would reduce 10%. 20% for EI200. Tri x is beautiful at 200 and minus 20%. Link to post Share on other sites More sharing options...
ohnri Posted October 12, 2010 Author Share #6 Posted October 12, 2010 Thanks everyone! Lots of useful information. I'll try standard development unless I go for even more overexposure. Great forum! Best, Bill Link to post Share on other sites More sharing options...
BJDrew Posted October 15, 2010 Share #7 Posted October 15, 2010 Advertisement (gone after registration) I found it depends heavily on your developer, the scene contrast of your subject, the enlarger (or scanner) you use, and/or the paper you print on. In a standard scene, D76 1:1, the enlarger I use and 11x14 ilford warmtone RC paper, I have to shoot at ISO 200 and normal development time to get a good print with a #2 filter. With HC110 (, its ISO 320. With a lower contrast scene, develop +20% time works. You'll find what works for you. If you are very specifix with your lab and comment like 'hey... the negs were a little contrasty last time can you give me 20% less time than your normal dev? They usually comply. Link to post Share on other sites More sharing options...
stunsworth Posted October 15, 2010 Share #8 Posted October 15, 2010 As others have said, there are so many variables that you probably won't notice over an entire roll. The only other suggestion would be to consider developing at home - it's not difficult and gives you the flexibility to alter exposure and development as required. After saying that I exposed Tri-X at 400, and developed in Xtol 1:3 and was very pleased with the results. Link to post Share on other sites More sharing options...
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