I guess this is some serious equipment then. I'm glad I picked it up. I almost didn't, but I figured that if I wanted to, I could just buy other parts. Which I'm looking into doing. Might get an ETRSi body and a Polaroid back. I'm aware of the size of the exposure I get on the Polaroid shots, so it won't come as a surprise to me. It's probably just the side of me that gives into the more gimmicky part of photography, but I'd really love a 135W back for it.