Tokina AT-X 840 AF D 80-400 mm f/4.5-5.6
10. Autofocus
During focusing we hear slight but not very bothersome whirr. The speed of the mechanism is better than that of the Sigma 70-300 mm APO, comparable with the Canon’s 70-300 IS and distinctly worse than the Nikkor’s 70-300 VR.
When it comes to accuracy we didn’t notice any front or back focus tendency. Apart from that in studio conditions the autofocus missed on average in 6% of cases – it is deemed to be a good result.
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