I feel dumb but cannot tell if a lens I have is USM or USM II. I know they didn't print the "II" on the lens so how do I know?! Thanks, as I eat my humble pie.
Great insights! Thanks everyone. It's funny, the lens I have has a conventional zoom, but does not have the II printed on it. So... sort of walks the lines of both most recent answers. I no longer have a camera on which I can mount this either to pul...
Hey all,Thank you for your thoughts and help! Good people here. OK, so the lens I have is:100-400/4.5-5.6 L II IS USMNow, I wasn't sure if it was the I or the II. Canon's support page lists that when they came out with the II they did not print "II" ...
