jc_mcguire Posted April 27, 2013 Share Posted April 27, 2013 <p>I have exposed a roll of Tri-X 400 at ISO 200 by accident (careless mistake). anyway, I looked up the developing chart on digitaltruth, and it only shows times for 400, 1600. I have F76+ developer 1:9 dilution. If it is 6 minutes at 20'C for 400, how much time should i trim off development for a one stop pull?<br>In general, for this developer, what's the best way to determine how much time to add or cut in development when exposing at different EI? I've read somewhere that it's 15 seconds per stop, elsewhere says 30 seconds and other forums say 1 minute. </p> Link to comment Share on other sites More sharing options...
john_shriver Posted April 27, 2013 Share Posted April 27, 2013 <p>If the scenes were contrasty, and you don't want the highlights to block up, cut time by 10 to 15%. But if there wasn't a lot of contrast, just develop as normal.</p> Link to comment Share on other sites More sharing options...
steve_mareno1 Posted April 27, 2013 Share Posted April 27, 2013 <p>10 to 1 says you won't see any difference than if you had shot it at 400, like John said. Maybe a little more contrast or grain if it's 35mm. For 120 and up I would not expect much if any difference. B&W film, especially Tri-X, is very forgiving. Recently I accidentally developed some Tri-X 120 in D76 using the wrong times. I used the times for 1:1 dilution, but had forgotten to dilute it, it came right out of the bottle full strength. Instead of maybe 7 minutes, it was in the soup for nearly 11 minutes. I figured things would be a disaster, but the negs looked great! The grain and contrast were bumped up, but I liked it that way, and develop it this way all the time now. I sometimes cut back the time to maybe 9 minutes if it's a portrait w/ not so good lighting, but that is still a lot more than the norm for full strength.</p> Link to comment Share on other sites More sharing options...
mjferron Posted April 28, 2013 Share Posted April 28, 2013 <p>What were the light conditions? If bright shooting at 200 is not a mistake a but a perfect speed. If bright I'd do the 1-9 at 5-5:30 min. Cloudy or shade push it out to 6:30 min. Tri-x is very adjustable. I shoot it from 160 to 1600.</p> Link to comment Share on other sites More sharing options...
elsa_cooper Posted April 28, 2013 Share Posted April 28, 2013 <p>The dev times calculator <a href="https://play.google.com/store/apps/details?id=photography.darkroom.pro">there</a> says 4:45 min for Tri-X @ 200, Clayton F76+ (1+9, 20°C) with 30 sec agitation.</p> Link to comment Share on other sites More sharing options...
craig_shearman1 Posted April 30, 2013 Share Posted April 30, 2013 <p>That's well within the latitude of the film, if anything will just give you "gutsier" negatives that are easier to print. Many people routinely shoot there Tri-X at 200. Develop as normal and don't worry about it.</p> Link to comment Share on other sites More sharing options...
curtis_bouvier Posted May 2, 2013 Share Posted May 2, 2013 <p>I've found 5 min 30 sec does a decent job at 22c. but i dont usually rate higher.</p> Link to comment Share on other sites More sharing options...
curtis_bouvier Posted May 2, 2013 Share Posted May 2, 2013 <p>the website lagged out, admin plz delete these extras below this</p> Link to comment Share on other sites More sharing options...
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