Tamron SP AF 90 mm f/2.8 Di Macro review - Autofocus

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Tamron SP AF 90 mm f/2.8 Di Macro

7 October 2007

Arkadiusz Olech

10. Autofocus

Autofocus of the tested Tamron works quite loudly giving out a characteristic purring. In the FULL mode it is slow, because it is often lost. It shifts to a far-away minimum focus distance to come back to the right place. Fortunately, there is the possibility of using the „LIMIT” option. In this instance the lens can work in the range of the object distance of 0.29-0.43 meter, or from 0.43 meter to infinity. It results in acceleration of focusing.

Although, Tamron is not equipped in any ultrasonic motor of autofocus, it handles very well with accuracy. In the lab conditions it was mistaken in 6% of instances, which must be regarded as a very good result.

We did not also note any problems with so-called front and back focus. The lens focuses the sharpness exactly where we want it, which is especially important in macro photography.

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