Sigma A 14-24 mm f/2.8 DG HSM review - Autofocus

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Sigma A 14-24 mm f/2.8 DG HSM

9 April 2018

Arkadiusz Olech

10. Autofocus

The Sigma A 14–24 mm f/2.8 DG HSM, as its name indicates, is equipped with an ultrasonic autofocus motor called officially the Hyper Sonic Motor. The mechanism is practically noiseless. Running the whole distance range and confirming the focus, with the lens attached to the EOS 5D Mark III, takes 0.6-0.8 of a second. It is an average result. What’s interesting, the lens is a tiny bit quicker while cooperating with the older EOS 50D.

A huge depth of field you get because of those angles of view makes the autofocus performance easier, concealing any misses. It would be difficult to find evidently misfocused shots. As a result we have practically no reservations whatsoever when it comes to the focusing mechanism of the lens.

The Sigma didn’t need any microcalibration while attached to any of two bodies we used in our test and it is pretty obvious when you glance at photographs, published below.

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