I'd agree with this. I laboured with the 'standard' 150mm for a while before realising 210 was my preferred focal length. I bought a Schneider APO-Symmar f5.6 and have been very pleased with it.
Originally Posted by Alan Gales
You can get a real nice 210mm f/5.6 lens in a modern Copal shutter for around $200.00. Schneider, Rodenstock, Nikkor, Fuji, and Caltar are all great and pretty equal in quality.