Hi all,

Ive got a 645 back for my SQA which I won on ebay ut on closer inspection it looks the same as a 6x6 (apart from it saying 6x4.5 on it)!

The area of the darkslide which is visible on the film back appears to be the same size as a normal 6x6 back. Is this normal? I dont want to be running a film through and realising my compositions are all way off because im trying to shoot rectangles on squares.