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Cross process c41 with black and white chemicals



 
 
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Old March 5th 09, 06:35 PM posted to rec.photo.darkroom
K W Hart
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Posts: 142
Default Cross process c41 with black and white chemicals


"JCowie" wrote in message
...
wrote:
Does anyone have some ballpark times or even qualitative guesses for
processing color print film with black and white chemicals?

I'm taking a class and have free (as in beer) access to b/w
chemicals. Also, I have a few rolls of color (and some slides) laying
around and would be interested to see what they look like when cross
processed.

It's kind of silly, but I don't plan on using the rolls for anything
else.

Hi, wish I'd seen this sooner, Don't Do It. Cross pricessing is running
C41 in E6 or vice versa. One time I mistakenly ran one sheet of 4x5 b/w
thru E6 and it came out clear. Never did it withC41 but I'm pretty sure
you'd get similiar results. The most popular way is C41 in E6. You'll
proably have to pusk it a couple of stops but it varies from film to film.
You can get some neat results, high contrast and weird colors. Alot
offashion photogs used it back in the 80s, I think they liked the look the
high contrast gave faces. I learned this by working in NYC labs, its alot
of hit and miss. Good luck.


Processing color print film in B&W chemicals will yield a low contrast
negative with an orange mask, making it fairly difficult to print. For
developing times, start with times/temps about the same as Tri-X or a bit
shorter/lower.

As for processing B&W films in color chemicals, there is one simple problem:
color negative images are made from dyes, not silver. The dye image is
formed and then the silver is removed. I have developed B&W film in C-41
developer and C-41 fixer, leaving out the bleach step, and it works, but the
chemical activity is fairly low-- longer times and high temps (100F) are
required.

Go ahead and do your cross-processing fun to get it out of your system. By
the way, processing slide film in C-41 chemistry is kinda neat.


 




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