Les, I wish my 400 DO would excel in my hands. I have been trying to squeeze out of it every drop of IQ I possibly know how.
After all, I believe I manage to make much lesser lenses, even without IS, emulate supertelephoto lens performance on some occasions when the light is very good etc.
However, the best I can do with my 400 DO copy, and I really haven\'t seen anything different from other 400 DO users, is to keep approaching the performance of 400 f/5.6 kinda asymptotically.
I think by likening the IQ of 400 DO to that of 500 f/4 you may well be in a minority camp of users of both lenses.
However, all of this is a non-sequitur of sorts. Based of what we see happening with Canon\'s new lenses, it is a fact that the miracle weight/size trimming DO technology of 2002 has not been utilized so far, not even today in 2010 with the advent of Mk II generation supertelephoto lenses. Sapienti sat.
Sep 07, 2010 at 03:35 PM
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