Quote:
Originally Posted by nirofo
One thing this test does prove is that the old Nikon 105 is still a terrific lens, far better than the new 105 AF. The Sigma doesn't even come close in this test.
The thing I could never understand was, why do you need autofocus on a macro lens?
nirofo.
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So that users can try auto-focus, find out that it is useless for macro work, and hence not spend ages complaining they wish they'd bought an AF lens? Seriously though, probably because these lenses also make good portrait lenses, and perhaps AF is useful then. (Timid subject runs away but is caught in sharp focus by modern technology.)