I'm getting color negatives from Rodinal!

[cotdt]

Very cool, I develop Velvia in Rodinal and color bleach/fixer, and I get color negatives! The colors are low in saturation which gives a black-and-white look, except with colors. How is this possible, when the color developer is not used?

[Ash]

c-41 or e-6 is made to develop a colour neg/tranny from each dye on the emulsion. there's still silver crystals on there, that's the light sensitive bit like with b&w.

you're developing the silver content, and i guess a tiny amount of dye that rodinal can cope with. that's my guess.

[domenico Foschi]

Very cool, I develop Velvia in Rodinal and color bleach/fixer, and I get color negatives! The colors are low in saturation which gives a black-and-white look, except with colors. How is this possible, when the color developer is not used?

Could you post some scans?
That sounds exciting.

[butterflydream]

That's very interesting. I would like to see how it would be printed on color paper as well.

I had tried C-41 process to desaturated the color intentionally in the past - for my personal project titled "Depression". I over-expose +2 stops, minimize the deveop time to 30 seconds and maximized breaching up to 10 min. to get below scanned examples. But the lab couldn't print it as I see on the film scan.

[Leonard Evens]

Ash has it right. In each layer the latent image in silver halide is converted to silver by a developer but additional chemical processes are supposed to tie that to production of dyes in proportion to the amount of sliver present. Rodinal develops the silver and weakly brings out the dyes compared to a color developer. When you bleach the silver is removed.

[Ash]

Leonard so the question is, if you don't bleach and just develop in something like Rodinal, can you get a black and white 'tinted' neg? Say, with the desaturated colour...?


I had tried with some old slide film and got brown negs, so that wasn't so good. I guess the trick would have been to bleach there.

[mikez]

I have done some experiments with E6 film, B/W Dev, and C-41 BLIX and have achieved very low saturation negatives. If anyone wants more info please let me know. I want to thank the people in this old thread for their information albeit very brief/vague because it was the ONLY information I could find online about this process.

If anyone wants to know more about what I have done I will post up details.

-Mike

[Daniel_Buck]

so, does it develop as a negative? or a positive?

[mikez]

The result is negative, here are a couple rough 35mm scans. I tried both Rodinal and HC110, I am going to try Sprint developer as well.

http://www.flickr.com/photos/mikezphoto/4014051425/

http://www.flickr.com/photos/mikezphoto/4014814094/

[csant]

mikez, details, yes please!