New Tamron 100-400mm F4.5-6.3 Di VC USD Hands-on Review

The new Tamron 100-400mm F4.5-6.3 Di VC USD is a lightweight telezoom aimed at enthusiast full-frame and APS-C DSLR users. The lightest zoom in its class (minus the optional tripod foot) the 100-400mm trades brightness for portability, weighing in at 40 ounces (roughly 1.1 kilograms).

Optical construction comprises 17 elements in 11 groups, including extraordinary LD (low dispersion) elements. Minimum focus is a respectable 59 inches (1.5m) which works out at a a maximum magnification ratio of 1:3.6.

The optical Vibration Correction system offers the equivalent of 4 stops of correction, which should make a big difference to usability for telephoto shots, at and around 400mm. We’ve been impressed by the performance of Tamron’s stabilization in the past, and in theory, the new 100-400mm should be hand-holdable down to 1/60sec at 400mm.

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