Developing C41 film in B&W Chemicals

kully · 06-14-2006

I have some out-of-date film which I want to use to troubleshoot a light-leak.

I don't want to pay to have it developed, I was wondering whether it would be at all possible to develop the film in B&W chemicals - just to the state where and light leaks would be noticeable. I wouldn't care about the image itself...

PS I'm sure I remember a thread on these lines a while back, but I'm buggered if I can find it.

Thanks,

Ash · 06-14-2006

Yea I started a thread.

Get some universal developer. Make it a little too concentrated, develop it for longer than you need.

The negs will appear blank, but hold them to a light and you'll see the image.

how to ruin C-41 - http://www.rangefinderforum.com/foru...ad.php?t=23497
cross processing blues - http://www.rangefinderforum.com/foru...ht=develop+C41

anaanda · 06-14-2006

its $2.75 at costco in one hour...Develop Only.. (at least where I go in San Diego)

pshinkaw · 06-14-2006

Someone on Photo-net gave me this formula. A lot of "found films" in that Photo-net thread were processed this way. I have not tried it yet.

Kodacolor in Acutol for B&W negatives

10 minutes in Acutol 1:10 - 20c. Water stop bath, alkaline fixer (Photographers Formulary,) wash in running water for a few minutes. Photo-flo and hang in the bathroom.

If you try it please let us know what happens.

-Paul

nrb · 06-14-2006

I've been using Rodinal to develop Agfa color negative film. Better results than Acutol and d76 in my experience. Look in my gallery to see some results.

pshinkaw · 06-14-2006

What are your times and temperatures?

-Paul

nrb · 06-15-2006

1:50, 12', somewhere around 30 C...

pshinkaw · 06-15-2006

Thanks for the information. Rodinal is a lot easier to obtain than Acutol.

30 C. is a little warm for developinbg isn't it? In Fahrenheit that would be 86 degrees.

-Paul

nrb · 06-15-2006

Got less grain with higher temperature, after all c41 uses higher temperatures too. Scanning must take account of grain. My experience is limited to less than 10 outdated cheap rolls with Acutol, D76 and Rodinal. Last time I decided to emulate c41 temperatures, the results were noticeably better. Let me know about your experience.
Nuno

Ash · 06-15-2006

Looks like I'll be using that chemical balance next time too!