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Sigma 135mm f/1.8 DG HSM Art: How Good is Autofocus Accuracy on Nikon D810

Get Sigma DG HSM Art including the Sigma 135mm f/1.8 DG HSM Art B&H Photo.

See Sigma DG HSM Art lens reviews in diglloyd Advanced DSLR.

The weak point of most DSLRs is autofocus at distance. The autofocus system itself often lacks precision (scientific sense), and the lens can contribute by offering less than ideal optical performance and/or a lens motor not up to highly precise operation. Not so with the Sigma 135mm f/1.8 DG HSM Art or so it seems—I wanted to find out if I could rely on DSLR autofocus with the Sigma.

In my review of the Sigma 135mm f/1.8 DG HSM Art:

Sigma 135mm f/1.8 DG HSM Art Examples: Autofocus Accuracy (Nikon D810)

Includes images up to full resolution, with crops. The images also serve to document the optical quality possible with the Sigma 135mm f/1.8 DG HSM Art wide open at f/1.8.

f1.8 @ 1/125 sec, ISO 64; 2017-05-06 19:51:02
NIKON D810 + Sigma 135mm f/1.8 DG HSM Art

[low-res image for bot]

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