httpwww.pedroperez.phot

Hi, I am interested in buying the 135w film back but do not have clear how to compose the image as in the viewfinder I will still be seen the full square image. I could use my imagination and compose it by what I think would be but prefer a more precise way to do it. I have not been able to find the Bronica microprism/split-image for film back ETRS 135 that could solve the problem. Any hints/ideas ? Thanks