Tri-x 400 at 800 same developing times?

Landberg

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Aug 17, 2011
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Hi!

Can someone explain to me why kodak wants me to develop Tri-x 400 at 400 and 800 at the same times? I can't really understand that. Why not just shoot at 400 and when ever you need the extra stop just underexpose one step? What am i missing?
 
With all developers i think. Massive dev chart says it to. Right now I'm using Tmax developer. Like it the most with tri-x.
 
From Kodak Technical Data sheet for Tri-X
Because of these films’ exposure latitude, you can
underexpose by one stop and use normal processing
times. Prints will show a slight loss in shadow detail.
 
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