Response to about Pyro

I believe Silverprint in England sells PMK. But most pyro formulas must be hand-mixed. Pyro is not famed so much for acutance as for luminous high values that can be printed, no matter how bright they are. But on the other hand the tanning effect of the developing agent does prevent grain migration and can enhance edge effects. In my opinion, pyro does not produce the high acutance that can be had from Rodinal, but it isn't nearly as likely to blow out the high values either.

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