I think Im going to buy a Zeiss Nettar 517/2. Ive heard the built in viewfinder is very smallish and wonder if I can use a 35mm seperate viewfinder in the hotshoe? The camera is 6x9 and since 35mm have same aspect ratio, a 35mm zoom finder could maybe do well? Can somebody suggest a nice viewfinder for such a camera?

What about parallex error, I guess that increases the more the viewfinder is above the camera, making the inbuilt more ideal?

Let me hear how you guys are using such an camera. I really like the price and the wonderful big negative, so I hope I can use the camera :-)