Sigma A 24-70 mm f/2.8 DG DN
10. Autofocus
The speed of the mechanism matched its accuracy pretty well - we didn't notice any significant problems, either while shooting in studio or outside. The number of misses we got while working on our testing charts didn't exceed 2% which is a very good result.
We didn't have any problems with front or back focus tendencies either – even taking photos at the longer end of the focal spectrum and from small distances, or near the maximum relative aperture, the subject was always situated in the DOF area.
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| A7R II, 50 mm, f/2.8 |
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| A7R II, 70 mm, f/2.8 |
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