Topic: Shooting Tri-X 320 at 400

[Abzug]

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

[Blaxton]

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.

[sheetshooter]

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,

[Francois]

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

[Abzug]

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?