I've purchased a 500CM and getting back into film photography. I've purchased some Fujifilm Neopan Acros 100, Kodak T-Max 100, and Ilford HP4 Plus. As I slowly experiment with these different films, several questions come to mind. My natural tendencies is to shoot fine grain film. For a variety of reasons, I will be shooting my 500CM from a tripod and I don't anticipate the need to capture action. Therefore, longer exposures won't bother me. That being said, I have noticed that several photographers who's work I admire use Kodak Tri-X 320/400. At first I assumed they were generally shooting handheld and needed the higher ASA rating. Now, I'm starting to wonder if there is some characteristic or strength to Tri-X that is the primary reason these folks are using it - not the higher speed? Sooner rather than later I hope to reach a place where I'm prepared to purchase a large quantity of film and learn to make the best photographs possible.
Here is my basic questions:
1. What are the characteristics and strengths of the 120 b&w film generally available?
2. Does my desire to develop in Rodinal versus D76 limit my film selection?
3. When it comes to grain, is there much difference is there between Acros 100, T-Max 100, HP4 Plus and Acros 100, Tri-X, HP5 Plus?
Accordingly, I wanted to tap into the APUG collective and get some comments/suggestions.
Thanks in advance.
Here is my basic questions:
1. What are the characteristics and strengths of the 120 b&w film generally available?
2. Does my desire to develop in Rodinal versus D76 limit my film selection?
3. When it comes to grain, is there much difference is there between Acros 100, T-Max 100, HP4 Plus and Acros 100, Tri-X, HP5 Plus?
Accordingly, I wanted to tap into the APUG collective and get some comments/suggestions.
Thanks in advance.

