Found many answers to my questions regarding bleach in various Phototrio threads, except those regarding sodium thiosulfate.
I do understand the role of the potassium ferricyanide, of course, and also understand that the addition of potassium bromide makes the bleach a rehalogenating bleach, meaning I can re-develop the print.
What I'm not sure I understand is the role played by sodium thiosulfate in Farmer's reducer. What, exactly is its impact? Can I still re-develop if my solution contains both potassium bromide and sodium thiosulfate, or is that cancelled because of the sodium thiosulfate? Do I still need to fix the print afterwards?
I use this formula from the latest edition of The Darkroom Cookbook:
I do understand the role of the potassium ferricyanide, of course, and also understand that the addition of potassium bromide makes the bleach a rehalogenating bleach, meaning I can re-develop the print.
What I'm not sure I understand is the role played by sodium thiosulfate in Farmer's reducer. What, exactly is its impact? Can I still re-develop if my solution contains both potassium bromide and sodium thiosulfate, or is that cancelled because of the sodium thiosulfate? Do I still need to fix the print afterwards?
I use this formula from the latest edition of The Darkroom Cookbook:
