i find myself shooting in low-light condition quite often nowadays, as my school life takes up the daylight hours. and i hate my camera hunting trying to get focus (even in the late afternoon when i can clearly see through my viewfinder). i'm looking into getting a focus screen and juz MF. I've found Kat Eyes but it's rather expensive. I found some ebay sellers but i think these screens will need calibration (shimming) b4 it can focus accurately. This is the part i'm not very sure of.
Does anyone know someone who offers this service?