Bob Carnie
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If you're using Ilford Multigrade FB, Selenium toners will produce a subtle cold blue tone. It will convert the shadows first, then the lighter tones, but it isn't easy to detect visually so you might be better off using the sepia toner first (dilute the bleach 5:1 to slow its action), then selenium. The selenium toner will then lessen the sepia tone, but I think it's an effective combination. I used Tetenal Sulphide as the sepia toner.
Ilford Galerie FB, OTOH, will give a red-brown with selenium. I can't say about selenium with other papers, sorry. I believe gold will give blue tones with a warm-tone paper, although I've never tried it.
Hi Bob,
Hypo-Alum Sepia and Gold could give you that split blue you want.
Advantage : No Bleach and good control of toning.
Problem : Hypo-Alum needs to be very hot and toning time is long around 15 minutes.
Hope that helps.
G.
Iron blue toners are unstable as you've found, you can use a dye-coupler toner, this was what Bob Carlos Clarke used, essentially you bleach and then re-develop in a colour developer which has the right balance of couplers, blue is very easy.
I've posted the details somewhere here on APUG, but I think I have the scan of the 1960's BJP pages here in Turkey, as well I'm sure I have the original in a lte 1920's or a 30's BJP Almanac. You'd need to buy only the coupler, and then dissolve them.
It seems I told you all this 3 years ago
alpha-Narthol is Blue.
Ian
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