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Lens review

Tamron SP 24-70 mm f/2.8 Di VC USD

23 June 2012
Szymon Starczewski

10. Autofocus


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The tested lens is equipped with an ultrasonic autofocus motor - small wonder the mechanism is practically noiseless. We don’t have any reservations concerning its speed either because running through the whole scale takes just about half of a second, which is a splendid result.

What about the accuracy of the autofocus? First we should emphasize the fact that the lens didn’t need any calibration and it focused exactly where it should on both the 50D and on the 1Ds MkIII, without any noticeable tendencies of front or back focus. Also in the studio conditions we didn’t encounter any serious accuracy problems. The number of misses didn’t exceed 4% which is a good result.

Tamron SP 24-70 mm f/2.8 Di VC USD - Autofocus