Although this Sigma Art lens has the same f/1.4 aperture rating as its 50mm and 85mm stablemates, it’s comparatively compact and lightweight, measuring 77x94mm and tipping the scales at 665g.That makes it smaller and lighter than the competing Samyang manual-focus lens.
Typical of Sigma’s Art prime lenses, it has a fast and whisper-quiet ring-type ultrasonic AF system, with the usual availability of manual override. For manual focusing, the generous rotational travel of the focus ring enables fine and precise adjustments.