I just sold one of the recent DO Tessar 4,5 210mm in Copal 3. I used that lens for table tops when I needed confined sharpness and a blurred background. It was crisp even wide open and covered enough to allow Scheimpflug effects. Very nice lens when a Copal 3 is not a problem. But digital is handy, unno. I also own a Xenar 210, probably the lightest 210mm for backpacking besides the Nikkor M 200. Very sharp lens too. However, the crisper image I saw is from the Nikkor W 210 one of my friends owns. Nothing scientific though, just appearances!