So I don't NEED it. And I have a rangefinder setup I'm OK with, 50-35-21 but all of it is screwmount. But I keep thinking about it. I want to experience the system. I want to use it. But I don't want to lose money on it. Do summicrons generally have compatibility issues with bessas? The two lenses I've been eyeing the most are 35 and 50mm 'crons What's a good resource to read up on them? What kind of rangefinder system do you have and how do you like it? How would you change it? If you didn't knock your camera around too much, would you be happy with a bessa and a summicron? Bokeh and contrast matter more than sharpness. Do you find newer APO designs to render highlights worse? Do you have one you want to get rid of?