Hey everyone!
RA-4 reversal has always interested me, and I thought it might be a fun way to make "prints" of my autochromes. I had a secondary idea too, involving exposing a blank autochrome screen-plate in front of RA-4 paper in camera, to make a sort of faux-autochrome print.
I have yet to try the second idea, but my first tests with making prints didn't pan out so well. I tried a variety of filtration with yellow and magenta filters from a Cibachrome printing kit, but I was never quite able to get the color "blue"... Even when the rest of the colors were balanced and whites were mostly neutral looking, blues always kind of came out grey.
In the autochromes, additive colors of violet and green make the color blue. But for some reason, this doesn't seem to quite translate as well when remade into a subtractive color system. I wonder if RA-4 paper is even equipped to handle "violet" (e.g. does color film turn violet into purple, a mix of red/blue)?
Anyway, it was an interested experiment. I'd still like to follow up with in-camera tests with a screen-plate to see if that fares any better.
RA-4 reversal has always interested me, and I thought it might be a fun way to make "prints" of my autochromes. I had a secondary idea too, involving exposing a blank autochrome screen-plate in front of RA-4 paper in camera, to make a sort of faux-autochrome print.
I have yet to try the second idea, but my first tests with making prints didn't pan out so well. I tried a variety of filtration with yellow and magenta filters from a Cibachrome printing kit, but I was never quite able to get the color "blue"... Even when the rest of the colors were balanced and whites were mostly neutral looking, blues always kind of came out grey.
In the autochromes, additive colors of violet and green make the color blue. But for some reason, this doesn't seem to quite translate as well when remade into a subtractive color system. I wonder if RA-4 paper is even equipped to handle "violet" (e.g. does color film turn violet into purple, a mix of red/blue)?
Anyway, it was an interested experiment. I'd still like to follow up with in-camera tests with a screen-plate to see if that fares any better.