Introduction Independent lens maker Tokina name their lenses somewhat cryptically. The $680 AT-X Pro 116 DX II is a APS-C format lens with a focal length of 11-16mm and f/2.8 maximum aperture and is a revision of the similarly named AT-X Pro 116 DX. On a Canon APS-C camera, with its slightly smaller than standard size sensor, it’s the equivalent in 35mm format to a 18-26mm, on a Nikon DX format DSLR, it’s a 17-24mm. Although the optical construction remains unchanged (it includes two elements with aspherical surfaces and two low dispersion glass elements), the lens
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