C41 film in dektol d-72

[frank]

In searching times, concentrations, and temperatures for this process, I found someone suggesting developing at 30C. Wouldn't a higher concentration be as effective?

I have a mix of 100, 200, and 400 speed colour films to develop in dektol. Does anyone have a proven time, temp, and concentration recipe?

 

[Rick A]

D-72 for press negatives, dilute 1+1 and develop 5 minutes at 20c(68f). This is your jumping off point, and you will need to do your own testing to narrow down the results you desire. You can dilute 1+2 for less contrast. I use D-76 1+3 for30 minutes stand at 20c, 30 seconds initial agitation, then just walk away until you hear the buzzer. I have heard of people using Dektol 1+8 for film, I never tried it. I have used it at 1+8 for ortho film to achieve continuous tone.

 

[frank]

I believe I'm correct in assuming that c41 film requires more development than B&W film because the colour film a) has less silver, and b) has an orange mask which lowers the contrast of the image. Right?

 

[Rick A]

Not necessarily more development time, but you are correct about the contrast. I do stand development with color film ONLY, as I am usually busy doing other things and I'm not so interested in the outcome. Occasionally, I will print an image that I decide I can't live without. I have never developed any film for scanning, I only print so YMMV. I sold off my color processing gear a couple years back and shoot B&W almost exclusively, I shoot color maybe once a year at most so I really don't have notes. The last roll I shot came loaded in a P&S camera I picked up for a dollar in a thrift shop.

 

[frank]

Thank you Rick and John. I'll get back to you once I have results.

 

[Cannwyll]

Few days ago I tried to develop old Orwochrom UT15 (25 ASA, 8 mm, color reversal, exposed as 6 ASA) in Dektol 1+2 @ 20*C to get BW negatives. And I got nothing Pure black film. Then I shortened developing time to 2,5 min and I saw very dark, non-contrast frames. So Dektol for this film is to strong. I don't care about grain and low tonal range. I'd like to see anything on such outdated film. My next step will be: Dektol 1+10 @ 20*C: 2,5, 5 and 7,5 min.

 

[removed account4]

hi frank

what I do is make a batch of caffenol c and add 10 or20cc of stock dektol to it
I then dilute some dektol 1:7ish ...
I process the fillm in the dektol agitate 1min then 10s/min after that for 4 mins,
pour out the dektol, then put the caffenol ( or Dcaffenol ) in it, agitate continuously
for an additional 4 mins. you will have usable film.
I have some film to process soon and will be doing the method described for everything I exposed
b/w and color and chromes.

good luck!
john