Part 2, I finally got to try out a lens I borrowed from my father. It is an older 500mm reflex lens that I attached to my Canon with an adapter. It turns out that the lens becomes about a 1000mm ( 500 x 1.6 ( 2/3 sensor ) x 1.25 (for the adapter) = 1000mm. All the shots below were done by hand, not an easy feat with moving targets. I like this lens but it will take some time to get a good feel for it. I'm pleased with the results for a first run in the field. I might just have to go back next Sunday.