norayr Posted December 29, 2018 Share Posted December 29, 2018 Hello I wonder if I need to increase development time in case I use d-76 second, third, time. And how many times I can use it? Depending on if it's stock or 1+1 ? Eventually, I am mostly doing push. From 400 to 1600. Then how longer should I keep every next two rolls that fit in my tank? thank you! Link to comment Share on other sites More sharing options...
glen_h Posted December 29, 2018 Share Posted December 29, 2018 For stock, the recommended capacity is one 135-36 or 120 (8x10 area) roll per 8oz or 250ml. For 1:1, it is half that. There are some recommendations for a 10% time increase for a second roll. If you are pushing, you probably should not do more than capacity. -- glen Link to comment Share on other sites More sharing options...
rodeo_joe1 Posted December 29, 2018 Share Posted December 29, 2018 Why not download and read the datasheet for D-76, or the bit of paper that came with the pack of developer? "Eventually, I am mostly doing push. From 400 to 1600." - Ah, you mean underexposing by two stops and then over-developing? Link to comment Share on other sites More sharing options...
glen_h Posted December 30, 2018 Share Posted December 30, 2018 In addition to what I said above, capacity numbers are based on film area, and not on any specific type of film. Higher speed films have bigger grains, and maybe more of them, and so use up the developer faster. Tradition is not to consider that, but for best push results, don't stretch the developer. Now, for Tri-X Kodak recommends the same development time for EI800, so you might consider 1600 only one stop (more) push. In any case, not pushed you can probably stretch it to one more roll with 10% more time, for push, don't do that. -- glen Link to comment Share on other sites More sharing options...
norayr Posted December 30, 2018 Author Share Posted December 30, 2018 so for push, how many times would you recommend to use the d-76 developer? Link to comment Share on other sites More sharing options...
glen_h Posted December 31, 2018 Share Posted December 31, 2018 I recommend for push not more than the rated capacity. One 135-36 roll or one 120 roll per 8oz/250ml of stock. Two 135-24 rolls isn't so much more than that. Since it is about 250ml for one 120 roll or two 135-24 rolls, you can do two of those with stock concentration. Increase by 10% for the second roll. -- glen Link to comment Share on other sites More sharing options...
norayr Posted January 5, 2019 Author Share Posted January 5, 2019 I used d-76 three times today. Each time for two rolls. Took development time from massive dev chart, i. e. 9.25 (I assume it's 9 minutes 25 seconds, i. e. almost 9.5 minutes) for pushing to 1600. Then increased development time %10 for second, and another %10 for third time. Results look good. Will scan and see but already they seem good. Link to comment Share on other sites More sharing options...
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