12-10-2020, 08:14 PM
(12-10-2020, 08:03 PM)Rover Wrote: That was pretty surprising though, since I used to expect it to turn f/7.1 at about 320~350mm tops.
Then they would have to construct the lens in a way that the aperture (size) enlarged from 320 to 500mm to stay at f7.1 (so a fixed max aperture (f-stop) over that whole range. That would be a bit odd..