Sony DT 50 mm f/1.8 SAM
10. Autofocus
The autofocus of Sony DT 50mm f/1.8 SAM works quite loudly – we can hear distinct buzzing sound. In regard to speed, it’s hard to accuse it of anything. It runs through the scale, whichever direction, in approximately 0.7 second. And, as the range here is wider than with its competitors, we don’t complain at all.
It’s slightly worse with accuracy, but cheap prime 50s of competitors don’t belong to the most accurate lenses either. On average, it resulted in 14% misses in studio conditions, being little better than Nikkor and noticeable better than Canon.
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We also haven’t notice any tendency of front- or back-focusing.
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