Tamron AF 55-200 mm f/4-5.6 Di II LD Macro
10. Autofocus
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The Tamron’s autofocus is rather slow and noisy to add (but perhaps a tad less so than the autofocus mechanisms in Sigma lenses). In order to be honest we must admit that when it comes to accuracy it manages quite well because in studio conditions it missed in less than 8% of shots, a really good result for a device without any USM/HSM/SWM motor. It’s worth adding here that most of misses happened at 200 mm, where the maximum aperture of f/5.6 doesn’t help with the correct focusing.
We didn’t notice any problems with front or back-focus, which is clearly visible in the photo below.
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