Color Paper Developed in B&W Developer for Paper Neg?

[Fragomeni]

Has anyone had experience exposing color photographic paper in-camera and developing it in regular b&w developer to produce a b&w paper neg? I'm not even sure if it can be done but I felt like it was worth asking. Thank you.

 

[hrst]

I've done a lot of "reversal RA-4" prints from color slides. In this process, the first step is a BW developer and then I expose the paper to light, so this is actually exactly what you are asking, just that after the exposure a color developer is used, but I always see the BW negative there before doing that.

So yes, BW developer will work on RA-4 paper and will produce a nice B&W negative. But the Dmax is not very high compared to BW papers, so expect lower contrast. As an extra benefit, you can create a color positive image afterwards if you want.

 

[Fragomeni]

In this process, the first step is a BW developer and then I expose the paper to light, so this is actually exactly what you are asking, just that after the exposure a color developer is used, but I always see the BW negative there before doing that.

This is unclear. Can you explain further. Are you saying that you first develop the unexposed paper an b&w developer and then expose it and then develop it again in color developer? You lost me with that. I'm very interested in what you've done but I need a better explanation. Thanks for your help and looking forward to more info.

 

[Mick Fagan]

Francesco, just to make things more interesting, check out this print I did last century!

(there was a url link here which no longer exists)

Mick.

 

[Domin]

Search apug for "reversal ra-4". There is info about both direct positive and printing from slides on ra-4 paper.

 

[hrst]

This is unclear. Can you explain further. Are you saying that you first develop the unexposed paper an b&w developer and then expose it and then develop it again in color developer? You lost me with that. I'm very interested in what you've done but I need a better explanation. Thanks for your help and looking forward to more info.

Please see (there was a url link here which no longer exists) for detailed description .

 

[Fragomeni]

Francesco, just to make things more interesting, check out this print I did last century!

(there was a url link here which no longer exists)

Mick, very cool! I can only imagine the looks on the audience's faces!

Please see (there was a url link here which no longer exists) for detailed description .

I see. Thanks for the link. This looks very interesting in itself!

I'll have to grab some color paper sometime soon and see what kind of B&W neg it produces as an in-camera neg developed in B&W developer. I've decided that I have pretty much two choices for panchromatic paper negatives; color paper developed in B&W chemistry as discussed here and the Ilford Ilfospeed RC Digital paper that is panchromatic B&W paper designed for some type of digital printing. Thanks all for your help.

 

[pentaxuser]

Mick I had a look at your link and saw that someone had asked for more details. Good thinking on that person's part I said to myself then noticed it was me!

I have never had the chance to try it out but in the last few days a friend has asked me if I can do anything with some old and thin colour negs.

I have been able to follow your explanation but I note that modern RA4 chems seem to be a combined blix. I have the Kodak kit whichs uses blix, I think, so can your process still work without separate bleach and fix ?

Finally does your process work at room temp(say 18-22/24C) or does it have to be at 35C( equivalent of 95F)?

Thanks

pentaxuser

 

[Photo Engineer]

All of these processes will work at 20 deg C.

If you want color, just remember to use the RA-RT developer replenisher with no starter.

PE