And at the bottom of Cedar Hollow Trail: 150mm lens, yellow filter, overcast skies, scanned from FB print.
[IMG]Neg20Ac flkr by John Olsen, on Flickr[/IMG]
Ordinary sodium carbonate would seem to be an easier accelerant to fine-tune that sodium hydroxide, which is used in crystal form for very high contrast A&B lith developers, no acetone involved. But there's no arguing with Merg's results, which as usual are a delight to see.
Merg
Thanks for going back into your archives with the last few days posts. As Drew just said they are a delight to see.
This may work.
https://www.photrio.com/forum/thread...2#post-1578910
Scroll down to pages #32 & #35.
There is an interesting history here. The original Metol/Acetone formula that many use as g. Paul Bishop's formula, was refined in collaboration with my father. Paul was a very fine portrait photographer working out of Berkeley. The initial experiments were for 120 film. Another person involved in the development was John Below, also of Berkeley, who was a professional chemist. John made Amidol for Brett Weston on a barter basis. He ultimately had an excellent collection of Brett's prints! John devised the Phenidone print formula that I presently use and was a good friend for many years.
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