Canon EF-S 17-55mm f/2.8 IS USM
Canon EF-S 17-55mm f/2.8 IS USM review
Canon’s EF-S 17-55mm f/2.8 IS USM is the optically fastest lens the company has produced for EF-S digital SLRs. The big question for EF-S body owners though is why they should pay extra for an f2.8 lens when they could enjoy the longer reach of the EF-S 17-85mm at a lower price and just increase their body’s sensitivity under dim conditions. It’s a valid point, but there’s still benefits...
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