Quote:
Originally Posted by billcowan
I am thinking, though, that selenium can only be effective once (if done to completion)
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I think that is right, Bill. Chromium allows at least two passes and maybe in theory as many as you like but presumably after two passes rapid diminishing returns set in and I think that there is a limit to how many passes the neg can take.
Mind you if a print with a grade 5 filter from a two pass intensified neg still looked as if it were grade 1 then consignment to the bin may be called for
Mike