Bill D. Casselberry wrote: > 1200mm is my favorite available focal length for this > sort of thing. I had two 2x'ers on a 300mm f4 once and > did this again.
Peter, have you sold that 1000mm yet? :) Oh boy, 4000mm f/32... cheers, - Dave http://www.digistar.com/~dmann/ (out of date)
