Upload & Sell: On
I like them. What focal length are you using, because it still seems to do a good job? Been debating setting up some feeders and perches myself. Will probably wait until I get the 600mm though too , not sure my 400mm will get as close as I want.
i shoot at 6-9 feet, use a 300 mm with a 20mm ET. You dont need a 600mm.