Tamron SP AF 90mm F/2.8 Di Macro
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Review of Tamron 90mm f/2.8 Di Macro 1:1 SP AF
By: SLR Gear
At the end of the day, the Tamron 90mm f/2.8 macro stacks up very well against its competition. It's tack sharp, with very low distortion and shading, and has chromatic aberration comparable to that of competing manufacturer's lenses. Against its most direct competitor, the Sigma 105mm f/2.8, the Tamron is noticeably sharper at f/4, and slightly sharper from f/2.8 - f/8, but has slightly higher...