Bob Carnie
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The order is critical beacuse once selenium toned it's harder to bleach the print for blue or any other toning.
I have done this but back in the late 1970's into the late 780's. My preferred blue toner was to use a dye coupler in a colour redeveloper, this was what the late Bob Carlos Clarke did for other colours as well, it's worth seeing his book Dark Summer. For some reason Tim Rudman didn't include Dye coupled toners in his books.
Ian
Toning using colour couplers requires a normal rehalogenating bleach - ferricyanide and bromide, then after washing redevelopment in a colour developer with the relevant coupler added, for blue it's αlpha-napthol.
You can either leave the coupler dye plus the silver image or bleach the silver. Bob Carlos Clarke used Tetenal's dye coupler kits but they are easy to make up from scratch.
Ian
It's something quite different Bob, you'd need to experiment quite a bit first to see how best to use the technique. Alpa-napthol is quite easy to get from a chemical supplier.
Ian
So where do I get some info to lead me in the right direction? I have tons of failed prints to experiment with, more than I should ever admit too.
I'll search, I know I posted the complete technique here on APUG but it may have been lost in a Forum upgrade. I've got the original 1930's article somewhere in a BJPA and it was republished in the 60's. Give me a day or so and I'll post it for you.
Ian
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