Originally Posted by
Mark Sampson
Um, let's step back a minute. TXP320 (4164) is sheet-film Tri-X; this emulsion was also sold for decades in 120/220 rolls. It is not the same as TX400 (in 35mm, 5063), which has never been offered as a sheet film. When I worked for Kodak, testing films/developers was an occasional part of my job. Sometimes I wondered "what exactly is the difference between TX400 and TXP320?" but was never interested enough to actually do the comparisons (in 120 format of course). So for my personal photography, I kept shooting TX400 in 35mm and TXP320 in 4x5 and didn't worry about it. TMY-2 may very well be the superior emulsion; apparently it's much improved over the original 1988 TMY. But not having tried it, I can't say.
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