In Tri-X only TXP is available in sheets, not TXT and TXP is 320 not 400. As I said, close though.
In Tri-X only TXP is available in sheets, not TXT and TXP is 320 not 400. As I said, close though.

Roger, I've head those assertions that some particular film is "actually 25% of published speed on the box". Always had a hart time swallowing that Kodak, especially; would print something on the box that differed drastically from actuality. After having a few shutter repairs and checks under my belt, I've re-learned practically 40 years in photography. Now I know that shutters on the larger cameras are usually 400 miles off in accuracy. On top of that, fooling around with Xray film, those guys are getting these crazy blinding-fast film speeds on the LF forum has turned me into a total skeptic. I've learned better, thanks to a lot of you guys here. And the moral of the story is to find out what your shutter speeds really are, and then, we'll see. Me, I say: Kodak says it's thus and so, it usually is. They made history for more than a hundred years as one of the worlds leading companies in the annals of laboratory accuracy. More so than even Dow, 3M, I venture to say. Just my take on the film speed discussion.

I just ordered 5 boxes of 50 sheets foma 400 4x5 from macodirect in Germany.
Stefan
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