I have an Agfa Isolette II that will not produce sharp pictures. I put a ground glass on the film plane, had the camera a given distance from a well lit object and focused the lens and nothing happens!. It stays slightly out of focus. I moved the gg back off the film plane and about an 1/8" and it comes into focus. The camera, is in almost mint condition and does not appear to be damaged. The front standard looks as if it is square and it snaps tightly into position. The camera has a 3-element Apotar lens and a Pronto shutter. An exapmle with a Prontor shutter can be seen here http://homepage.mac.com/mattdenton/photo/cameras/agfa_isolette_ii.html There are shims behind the lens/shutter that appear to be factory and I would assume it was adjusted at the factory. There is not enough room to put another shim 1/8" thick back there. These cameras are quite popular and are are known to have produced(relatively) sharp pictures. How can the focus distance be off by such a great amount? One other thing, the front two elements are housed in what appears to be an adjustable carrier. Could the distance between the front two elements account for such a big discrepancy? I'm stumped.