The Darkroom Cookbook Forum

Hi folks. I've got some old Kodak EktacolorType L in 4x5 which is waaay expired and long out of production. It's a C-22 process film. Apparently there are some labs that can and still do process c-22 but I wanted to see if I could give it a go myself. From what I gather, the difference between the two color processes is mainly temperature, though it's more than likely the developers differ chemically as well. Anyway, I've been developing my c-41 negatives with the Rollei Colorchem Kit which has been working great and even allows development of color film at temperatures as low as 75°F, though I've had no experience developing at this temperature as of yet. So I'm planning to give it a try and was hoping that maybe, just maybe someone else has had the same idea, some similar experience or just their two cents to throw in before I begin my little experiment. In any case I will provide an update as to the outcome, be it a miraculous success or a miserable failure. Wish me luck and thanks in advance for any responses.

-Jeremy

Sounds like you're breaking new ground, Jeremy. Please keep us posted on how it goes.

You will not get true, pure colors but hey the film is roughly 40 years old, right? C-22 uses CD-3 and C-41 uses CD-4. I would try processing at no more than 75 deg. F. at around 15 minutes for a first try (you don't day how much of this film you have). Expect a bunch of crossover, too. If you Google it you can find folks that have done similar things and official Kodak C-22 formulas as well. Have fun.

If you are still interested in C-22, I have the formulas I used some years ago. You will have to mix it yourself from bulk chemicals in order to process C-22 as no C-22 prepared chemicals are available as far as I know.
I have very limited experience with color negative, I used primarily Ektachrome E-4. At the price of Ektachrome film for E-6 processing, I have no plans for using Ektachrome.
Depending on how it was stored, your C-22 film might be borderline usable, or psychidelic dilly if it will develop at all.
You will need at least a decent triple beam balance and the bulk chemicals to mix it. Perhaps one of the other forum members could mix up a set in bottles for you to try.