I was wondering if anyone has had any experiences with Maxwell Precision Optics focus screens, in general, and specifically on the Phase 645DF+?
I'm looking to improve my manual focus accuracy, and am hoping this might help.
I shoot a lot of headshots with an 80mm or 150mm lens and P40+ back, usually wide open at f2.8 or f3.5 (respectively), where the DoF is not much more than 1 inch. So, if I'm off even just a little bit, the shot is usually garbage.
I would be looking at either a plain matte screen (because I'm often focusing off-centre), or a split-image/microprism screen for added versatility...both with "Hi-Lux" treatment.
AF does work, but I find it a real hindrance to have to re-compose each frame (I always shoot my headshots with the camera on a tripod), and lack on precision focus-points (a la dSLR) makes it a bit of a stab in the dark.
I also have the flip-up magnifier, but find it is of little use.