can I use c41 chem to develop RA-4 paper?

[narigas2006]

can I use c41 chem to develop RA-4 paper?

thanks for the help!

 

[Steve Smith]

Possibly. In the 1980's I used to buy a two bath kit which I think was called 2CR and made by Patterson.

This was intended to be used for both film and paper.

I used it to make one colour print and have never made one since!


Steve.

 

[Mike Wilde]

Contrast will be a challenge.

C-41 used CD-4 as the active developing agent

RA-4 uses CD-3. I have seen posts of using cd-4 at half the weight that a formula calls for cd-3, and started my home mixing this way. Don't do it. The dye forming gamut of these two differnet developers is vastly different. The prints will have colours, but the contrast seems to me to be much too high, and there was always a weird look to the print, even if one particular colour will be correct.

Filtration required will be quite different as well. Using CD-3 in my RA-4 developer formula and supra or portra paper when printing agafa film (i know, a wierd combo) usually has magenta at something like 40-70 and yellow usually at 30 units more or less above the magenta.

When I mixed the RA-4 developer using CD-4 at half the weight called for as CD-3, the filtration would be on the order of 5-15 magenta, and 10-60 yellow.

 

[pentaxuser]

Even if it did work after a fashion, it would be more expensive as well.

pentaxuser