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  Photography Forum: Photography Help Forum: 
  Q. Help! Negatives too contrasty!

Asked by Bryan Selent    (K=85) on 10/27/2006 
Currently im shooting Adorama brand B&W film (100 ASA) at 100, and developing it in 1:1 D76 at around 7:00 at 68 (just a guess).

Im following the chart for Tri-X 400 pushed to 100, and developing at -25%.

The negatives are coming out with too much contrast. Too much Black and White.

How can I fix this? Im guessing developing for a little longer?
Thanks
Bryan


    



 Jeroen Wenting  Donor  (K=25317) - Comment Date 10/27/2006
You might drop the times a bit indeed. For already processed film your only hope is in the choice of paper and processing of the prints though.




Kevin King
 Kevin King   (K=139) - Comment Date 10/27/2006
If you're guessing at the temperature, then that is most likely the problem. The processing temperature is very critical to the contrast of the negatives. A change of just one or two degrees will make a real difference. You need to get a good darkroom thermometer and control the temperature closely througout the processing cycle.





 ann clancy   (K=2014) - Comment Date 10/28/2006
as kevin indicates you can' quess, temperature or times.

also increasing development times, increases contrast, not decreases.

try printing with a grade 1 filter and see it that helps.





Phillip Cohen
 Phillip Cohen  Donor  (K=10561) - Comment Date 10/28/2006
You can try diluting the chemicals 2:1 and makeing sure the temperature is correct. A difference of only a half degree can make a big difference. Also the amount of agitation you give it will make a difference in the contrast. If you are using hand agitation, you probably want to give it good agitation for the first 30 seconds, then only 2 seconds of agitation every 30 seconds there after. If you agitate it too much you will get higher contrast and grain.


You might also try another developer like Microdol X if you can find it which is a much slower fine grain developer that will give you a nice smooth negative with decreased contrast.

Phil




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