Thanks. That makes sense and confirms my own logical machinations. I have to say, if this camera tests okay once I develop some film on Sunday, I'll be really happy. It looks a bit crude to my eyes, but it feels like a very well made camera. I am very impressed with the feel of the aperture ring, focus knobs, film advance, and shutter cocking lever. They all feel precise and leave a good feeling when operating them. I have been hunting for the "perfect" Rolleiflex, and I bought this C220 as a temporary fix, but it may turn out to be the end of the hunt. We'll see.