difference in chemical dilutions (1:1 vs 1:3)

[larkis]

What in a nutshell are the differences in the final effect on the negative when for example diluting D76 1:1 vs 1:3. Will there be gray range differences and contrast differences or does this only effect grain size and grain sharpness ?

 

[David A. Goldfarb]

D-76 1+3 will probably be a little sharper and grainier than 1+1. Tonal range should be similar, but might require some testing to get it there.

 

[aldevo]

Ultimately, I think you'll find that you be able to achieve the same gradation with the 1:3 dilution that you'll find with 1:1.

I used both dilutions in the past and I don't think there's any real beneift in using the 1:3 dilution. The difference in sharpness was not apparent at 7x but the increase in grain was perceptible.

 

[Ian Grant]

While Kodak or Ilford don't publish times for 1+2 this is slightly better than 1+3, and its easy to work out a starting point for the dev time

Ian