I'd like to do some portraiture work with 8x10 TMY. I've been given some good advice already (thanks jdef!), but have a specific question about pushing TMY. I normally shoot TMY at EI 400 for pyrocat development or EI 200 for ABC development. I'd like to shoot it at 1600, if possible, to get some faster shutter speeds for my younger subjects. Can I get an acceptable 2 stop push from TMY in pyrocat? Will I lose a bunch of shadow detail? What about contrast? I also have F09 (Rodinal) on hand if this will work better for pushing. I'm pretty ignorant about pushing film & will appreciate any advice you can give.