Delta 3200 in Clayton F76+/Arista Premium - Times?

[whatsnewsisyphus]

Hello all, there is conflicting data (10 mins here and here but 14 mins elsewhere) on how long to develop Delta 3200 (120, not 35mm). I was wondering if anyone could share their experiences. I know someone had tested this film/dev combo for Clayton but I cannot recall who. Maybe @marcmarc and @kreeger would know. Thank you so much!

 

[MattKing]

Welcome to Photrio.
I can't help you with your question, but I do appreciate a link to a French "Pirate" website about film development!

 

[loccdor]

Found one image on Flickr with information. 1:9 7 minutes for Delta 3200 in F76+.

Alternatively, when I don't have times, I look at ratios of times in different developers on Massive Dev Chart. For example, you can observe that one developer at a certain dilution will always be about +20% of the time of another developer at a certain dilution, no matter what the film. It takes a bit of time to go through the chart and find the mathematical relationship by collecting data points, but it works.

Massive dev chart also has a time. 10 minutes at 1:9. That's probably the safer bet. Perhaps the other one was at 1600 EI.

Some people also shoot at 3200 and develop for 6400 when it comes to these fast films. So I doubt a couple extra minutes over the 10 would hurt. In any case you'll have to dial it in with a little trial and error to your personal process.

 

[Paul Howell]

Odd that Clayton provides times for TMax films but not Delta. As F76 was designed to have the same working characters as D76, I crossed check the times for both F76 and D76, MDC lists Della 3200 at box speed at 10.5. If it were me I would go with 10 minutes at a starting point as both Delta 35 and 120 are the same emulsion. If you have time you can buy a short roll of Delta 3200 in 35mm for a test run.

 

[TomR55]

I have a data sheet for Clayton F76+ (used internally by a lab). These figures are for Clayton F76+, 1 + 9, in a Jobo machine, thus you should increase them by 15% if you’re using intermittent agitation, e.g., small or large tanks.

Delta 3200: 10:45 at 20 degrees C and 8:30 at 24 degrees C.

I hope that these figures prove helpful—let us know!

 

[whatsnewsisyphus]

Thank you all. I did 10:30, based on your responses and some relational time math between D76 and F76+ across other films.
1 minute + 3 inversions every 30 seconds at 20 degrees C.
Delta 3200 Base Fog is not something that I'm overly familiar with, but going by highlight density, I would say that they look a bit underdeveloped to me. I'll try 11:30 next time around.
Teaching Advanced Darkroom this semester so trying to build a binder of film stock tests.