Quote Originally Posted by cliveh View Post
I know this is a bit off OP, but can someone explain to me why T Max requires it's own developer and how this is advantageous to any standard PQ developer?
Tmax films do not really require their own developer. It's just that Kodak marketed them that way and designed the developer to work well with those films, especially for push processing and higher temperatures (25C rather than 20C).

The films work well with other developers like Xtol, D76/ID11, Rodinal, etc. and the developer works well with other 35mm and medium format films. Unless you use the replenished version, the developer is a little costly for large format.