Quote Originally Posted by film_man View Post
1. The 645 does not rotate however there was a 645 vertical back which however only gave you 12 shots, so it was pretty rubbish. There is a 645 mask for the finder but it is very tricky to find one. I though often of getting a 645 back for my blad but in the end I just crop, yes it wastes film but I still have the option of 6x6.
Thanks. I will start with 6x6 and probably stick with it.

Quote Originally Posted by film_man View Post
2. By coverage what do you mean? I have a PM90 and you see the full frame. I use it with an acute matte D and it is nice and bright, I prefer it to the WLF. I do like the WLF on the tripod but once you start getting into acute angles it is inconvenient.
Thanks. That is what I mean. I didn't know that it showed full-frame. I believe that the Pentax 67 and many (maybe most?) non-professional 35mm SLR's do not either. I will start with the WLF and eventually invest in a PM90 or something similar (I'm not familiar with the prism models). I just wanted to get a feel for how well these things are received.