Quote Originally Posted by Xia_Ke
Could it be a very slight gap in one of your shutter blades just enough to cause a tad fogging??? I get kind of the same problem with my Rollei. When pointed towards the sun, there is just enough the front face when extended focuing, that I get some fogging bands around the edges of my film.
I guess it could be a problem with the shutter, but your problem sounds different. Doesn't the Rollei have a leaf shutter (same as the Yashica)? If you only have the problem when the lens is extended, it's probably leaking in around the edges (don't know the terms) where the moveable front face connects with the main body of the camera. Could just be some seals need to be replaced.