Tamron AF 18-200mm F3.5-6.3 XR Di-II LD IF

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Tamron AF 18-200mm F3.5-6.3 XR Di-II LD IF

13th August 2006

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Intro

Tamron's AF18-200mm F3.5-6.3 XR Di-II LD IF was announced in February 2005 as an every last-round 11.1x zoom lens. Featuring insurance coverage from wide-angle to sufficient telephoto, it's ideal for a wide salmagundi of situations – and for some photographers be the alone lens they'll ever need.

The lens is designed for digital SLRs with cropped sensors and is available in Canon AF, Nikon AFD, Pentax AF and Sony Explorative (formally Konica Minolta AFD) fits. Mounted on nearly Canyon DSLRs, the Tamron delivers a 35mm equivalent focal range of 27-300mm; Canon DSLRs with their fractionally smaller sensors result in the Tamron delivering a 35mm eq range of 29-320mm. IT is not compatible with 35mm film or full-frame SLRs.

The optical design consists of 15 elements in 13 groups with three hybrid aspherical and two LD (small dispersion) glass elements. It features internal focusing, a quoted minimum focus outstrip of 45cm and comes with a lens hood.

In this reexaminatio we'll take an in-depth look at the Tamron AF18-200mm F3.5-6.3 XR Di-II LD IF and equivalence IT against its closely-priced rival, the Sigma 18-200mm f/3.5-6.3 District of Columbia. To push each lens Eastern Samoa insensitive as possible we tested them using the highest resolution compatible camera lendable at the clock of writing: Nikon's 12.4 Megapixel D2X. Most of the results are nonetheless equally applicable to the other versions.

The Niche Sharpness, Fringing, Geometry and Uniformity results are practical to all the different versions, while the coverage examples will apply to all only the Canon equip, which comes up fractionally longer due to its slightly higher 1.6x sensor cut back.

Nikon DSLR owners looking at 18-200mm zooms will undoubtedly also be considering the Nikkor 18-200mm model. With a slightly brighter aperture of f3.5~5.6 and crucially the only one of the three to feature Vibration Reduction to scrap camera-shake, the Nikkor's clearly a more preferred product, but can it justify costing twice As much? To find out we compared the Nikkor 18-200mm directly against its more affordable Tamron and Sigma rivals.

The series Numbers of the Tamron, Nikkor and Sigma lenses tested were 024356, 2005489 and 2002583. Due to similarities, many a sections of this review are settled on our earlier Sigma 18-200mm article.

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