Clayton F76+ dilution question

[Richard Wasserman]

Hi All,
I have started using Clayton F76 developer and really like it, however at 1:9 the times are a bit too short for my taste. I am thinking of diluting it 1:15, but can't find any information to use as a starting time. So, my question is how much time should I add for the increased dilution; 25%, 40%??? Any ideas? Thanks!

Richard

 

[titrisol]

Use 1+19 and develop for 125% more of the time for 1+9.
That is 5 minutes at 1+9 = 11.5 at 1+19

Go easy on the agitation and you'll get full shadow detail and harness the contrast.

 

[Eric Jones]

I second what titrisol has to say. All of my fancy pancy testing with Acros and Clayton F76+ confirms it. Not sure if you're using sheet film but I can e-mail you pdf's of all the data for Fuji Acros, F76 1+9 and F76 1+19 using contanst agitation in BTZS tubes if you like.

Best wishes

Eric

 

[Richard Wasserman]

Thanks for the info. I'm using FP4 and Neopan 400 in 120 and will try it at 1:19 with a 125% increase in time. Will I see a difference in quality at the higher dilution-more grain, etc? I know, I know-try it for myself and see. I always have film waiting to be processed and will run some after I get home from work.
Richard

 

[titrisol]

don't forget to share your results