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Confused amateur photographer on cross-processing E6 with C-41

Penny Greenberg , Jan 24, 2008; 02:46 a.m.

I recently got my slide film (I use Kodak Elite Chrome 100) cross-processed because my high school teacher a year ago told me to try it out. When I got it done at a photo lab, I was confused by the result. I expected the film to be positive since when I got my slide film developed, it was always positive, but the slides looked negative. Is this supposed to be the result of cross-processing?

Another question is, what do I do with the cross-processed slide film? The only thing I ever did with slide film is use a Daylab, make polaroids, and then did emulsion or dry transfers but Daylabs don't invert the colour, so what should I do with this negative coloured slide film?

Thanks for taking your time to read this. Sorry if I sound bewildered or unintelligent since I'm really an amateur.


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Tak Imura , Jan 24, 2008; 04:34 a.m.

It sounds as if your situation is normal as that is what is expected of using a slide film and processing it as a neg in c-41. If this isn't to your liking you will have to print it like a neg to get a more positive image. Since your end process is with the daylab you might try using negative film and having it cross processed in e-6. This will give you more of a positive image to start with. You should bracket images with a test roll to find a good ISO to start with.

Fredrik Sandstrom , Jan 24, 2008; 04:48 a.m.

There's no fundamental difference between E6 and C41 film. Either film will yield a negative image when processed in C41 chemistry, and a positive when processed in E6. Color negative film has that pesky orange mask though, so "slides" produced with such film would not look very good, unless there's a very specific effect you're after.

Larry Dressler , Jan 24, 2008; 06:18 a.m.

Have your cross processed negatives scanned to a CD or scan them yourself the us an imaging program on a computer to make prints or have prints made at your local pro lab.

Scott M. Knowles , Jan 24, 2008; 09:49 a.m.

Lesson learned, I guess, because I'm confused, why a teacher would suggest this. Why cross- process E-6 film to negatives? Ok, for an exercise, but why didn't the teacher have examples to show what happens instead of suggesting it? Why ruin good slide film? Ok, I'm a longtime slide shooter, but still...

Jeff Kelley , Jan 24, 2008; 12:47 p.m.

Scott, didn't your teacher tell you you'd have a roll of "art" instead of plain ol' snapshots? ;)

Best thing to do is scan them and then play with the results in Photoshop.

Penny Greenberg , Jan 24, 2008; 04:45 p.m.

Tak Imura: Is it possible to use color film (normal C-41 film) with a Daylab? Because I would like to try cross-processing C-41 with E6.

Fredrik Sandstrom: The only effect I was going for was the slightly green tint that E6 cross-processed pictures look like. So does that mean that when I cross-process C-41 with E6 chemicals, then the film will be a positive instead of a negative?

Larry Dressler: I'm really into using the Daylab so I'm not all that big on scanning in images. Thanks for the suggestion.

Scott M. Knowles: The reason she suggested it was because I was doing independent study and she suggested trying cross-processing slide film since I've used slide film before. The thing is, I never tried the cross-processing while I was in her class so she never gave me any more information on it.

Jeff Kelley: Yeah, I scanned the film and just inverted the colours and it came out somewhat like what I expected to see. Here is a scan of my film (the colours aren't exact and are lighter in real life):
After I inverted the colours in Photoshop:

daniel fortier , Jan 24, 2008; 09:38 p.m.

When cross processing slide films in C-41 process you will have an increase of contrast and boost of ISO, looking at your strip of negatives I can see that the exposure of neg #8 & #9 was severely over-exposed, #6 & #7 look fair but the lightning in the scene was comming to much from the top, not enough from the front, the eyes are in the dark, but still just work a bit more with photoshop.

Cross processing does not give great results without some work and testings. regards,

your posted image with a bit of PS

Larry Dressler , Jan 25, 2008; 06:27 a.m.

And a bit more not art but you get the Idea. when I Xpro slide filme I rate it 1-2 stops faster one of my favorites is Elitechrome 200 at 400.


Large photo attachment:
(Not Art . -- 180 x 800 photo)

Penny Greenberg , Jan 25, 2008; 04:32 p.m.

daniel fortier: Just to make sure, slide film cross-processed will come out as a negative like the first strip of film I posted?

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