Hi, I couldn't resist picking up a pack of the PX Grey Frame 600 film at the camera store the other day. Years ago, I started getting into making Polaroid transfers using my Grandfather's old slides, my enlarger and a land camera. Then Polaroid stopped producing film. I have lost my notes since then and have no idea where to start exposure wise. This stuff is expensive, so I'd like to get as close as possible on my first try. 600 ASA, F16... what do you think would be a good guess on the exposure? Thanks!