TMax 400

[Terry Hull]

Is this film different than Tri X 400 in application to the zone system, in terms of eposure and development times?

[Drew Wiley]

It is different. But you have to establish your own exposure and development regimen, depending on your own printing requirements. I personally expose TM400
actually at ASA400 for "normal" development. This is because it is a relatively
straight-line film, so you get good separation in the shadows. With films with more
of a toe, I generally prefer a lower ASA to push the exposure higher on the curve,
if the scene has a high contrast. But you'll need to experiment to pick a favorite.

[Terry Hull]

I understand the need for my own development time. I don't understand if there is less need for varying standard exposure and normal development, compared to Tri X 400, because TMax has more lattitude?