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This smart constant-aperture zoom trades a stop of speed, compared to Canon's EF 24-70mm f/2.8L IS USM, for higher magnification and lighter weight—with no increase in size (it's actually a little shorter) and only a small increase in price. The one-stop loss is more than offset by the 24-105mm's incorporation of Canon's image stabilization (IS), which means you can shoot handheld in light levels still two stops lower than possible with the 24-70mm (provided you don't have to freeze subject movement). Because this new pro zoom is not an EF-S lens—it fully covers the area of a 35mm frame—it's well suited to use with the new Canon EOS 5D D-SLR (see page 68), which has a full-frame image sensor. About $1,200.
View specs and pricing.

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