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Canon EF 100-300mm f/4.5 56 USM

By Kevin Carter - Wednesday February 13 2013

Lens Review

With a DxOMark score of 14.6 on a full frame EOS 5D Mk II, dropping to 11 on a EOS 7D, the EF100-300mm f/4.5-5.6 USM has homogenous sharpness across the focal range, good resolution in the centre and low chromatic aberration. On the downside, the lens has some vignetting at maximum aperture and low resolution in the corners, however on an APS-C body those particular effects are minimized. While interesting and still listed as current on the Canon site, this lens is no longer available new, but can be found secondhand.