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Originally Posted by
koraks
The 35mm film I did in 510 as far as I remember also didn't show any trouble, but I just put that down to 35mm simply not being very prone to it due to the physical properties of the film and reels, and the usual agitation patterns that are apparently mostly sufficient.
If memory serves Sandy King did at the time when Pyrocat was brand new argue that he had optimized it to reduce problems with unevenness, but I may be wrong. In any case, I find it somewhat easier to circumvent the issue with Pyrocat than with 510 Pyro.
Btw, because there has been some renewed discussion on 510 over the past 10 days or so, and I had the pyrogallol here anyway, I mixed a small amount of 510 a couple of days ago just to play with. So far only did some 4x5's in trays with it for carbon transfer, 1+25 for a few minutes. No unevenness as of yet, but I know this development routine easily gives even development on regular sheet film. The one thing that does pop out immediately is the huge amount of fog it creates in comparison with pyrocat. That's kind of unfortunate as I don't like having to print through all that unnecessary density. It really oxidizes like mad, this stuff.
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