Does anyone have an opinion on the merits of these two lenses:
EF 100mm f/2.8 Macro
EF 100mm f/2.8 Macro USM
In terms of sharpness is the newer lens better? If you were going to
buy one or the other, is the newer lens worth the additional cost?
Has anyone noticed a tendency to hunt for focus on the older lens? I
have one and in the same lighting, my EF 50mm f/2.5 Compact Macro will
snap right into focus and the EF 100mm f/2.8 Macro will miss and run
from one end of it's range to the other without ever hitting focus. If
I give it some help, by manually focusing, it usually snaps right into
focus. This sparked my original question as I wondered if the USM lens
would do a better job and might be worth spending the money to upgrade.
As I'm shooting on a 10D lately, what do people think of the EF-S60mm
f/2.8 Macro USM?
Mr. Bill
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