While you were out, the digital-only superzoom got more super. Tamron, originator of the superzoom lens more than a decade ago, ups the ante with its new 18-250mm f/3.5-6.3 optic — boasting the industry’s broadest zoom range, at nearly 14X (13.9X). A 28-388mm equivalent, it adds 50mm to the tele end and does so at no cost of weight, dimension, or optical performance over Tamron’s 18-200mm f/3.5-6.3 lens (which remains in Tamron’s catalog). Only the price is higher: at $499 (street), vs. $390 for the shorter lens.
Hands On:
Compact and light, it’s about the same size as the 18-200mm. Attractively finished in a satiny matte black, with ribbed and rubberized zoom and focusing rings (the former large, the latter on the small side), the lens sports the bright gold Di II band that distinguishes all Tamron digital-only lenses.
We found its zoom action slightly uneven, somewhat stiff and overdamped, which rendered the zoom lock unnecessary. AF action was fast and quiet. On the Canon EOS Digital Rebel XTi, with the lens barrel fully extended, it cast no shadow when used with built-in flash.
In The Lab:
SQF data came in at Excellent for all focal lengths, a surprising development, considering that the 18-200mm (like most 11X superzooms) drops into the Very Good range at the long end. In DxO Analyzer 2.0 tests, we found Visible barrel distortion at 18mm (0.72%) and Slight pincushion distortion at 35mm, 100mm, and 250mm (0.18%, 0.22%, and 0.16%, respectively). These numbers are also noticeably better than the 18-200mm.
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