Filmwasters
Which Board? => Main Forum => : Abzug August 03, 2009, 05:01:21 PM
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I made a mistake...I think. I shot a roll of Tri-X pro rated at 320, at 400 ISO. I plan to develop it in Xtol 1:1 and there doesn't seem to be any "push" times in the Kodak-supplied information. Any ideas, or should I just go ahead like I shot it at 320? Thanks,
Peter
www.insideexposure.com
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I think that the difference between processing the film for the usual time and extending development a little--maybe 30 seconds--would be subtle. I probably would just use the usual time and boost the contrast, if needed, during printing.
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A third of a stop underexposed is not going to affect much - maybe a bit of separation in the low values is about it. In which case I would not do anything at the film processing stage and would use the printing process as the means of correction ..... IF it is needed.
Cheers,
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As said, a third of a stop is not that great. I think Kodak recommends something like 8:30 at 20C for regular EI320 and 10:00 for pushing 1 stop to EI640...
I would simply take the difference between standard processing and 1 stop push processing times and divide that by 3... something like
10 min - 8.5 min = 1.5 minutes
1.5 min / 3 =0.5 minute
8.5 min + 0.5 min = 9 minutes
I hope you get my reasoning...
So I would add only 1/3 of the additional time needed for a one stop push to the base time.
This should get you so close that you probably wouldn't even know it by looking at the negs :)
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Thanks, all, for the information. The developing went fine. But now I have another, probably silly, question. On the box of the 120 film, it says "Tri-X 320TXP". Yet, on the developed negatives, it says, "TX-400." Shouldn't it say 320-TXP as the box?