If you are familiar with a film (like TX), use that -- so that you can move forward PREDICTABLY. Using a new film when getting used to artificial lighting is to add unknown variables to the equation. Is your lighting creating hot spots and hard shadow areas, or is it this snappy new unknown film?
Originally Posted by MikeGates
Whatever you choose, stick with it until your comfort level is high or until you have some COMPELLING reason to switch (like the need for fine grain or color). Then do the same with the new film.
If you have no other considerations, pick something with a lot of latitude, so that you don't bury yourself in blown highlights etc. I recommend Tri-X rated at 200 or 250 for that. Quite lovely stuff, really. Don't worry so much about uber-fine grain, go for tone -- Tri-X does well and is a flexible friend.