Sigma 17mm f/4 DG Contemporary Lens For L-Mount (Silver)

The Tiny Ultra-Wide Performer

Offering a remarkably wide field of view in a truly compact form, the Sigma 17mm f/4 DG DN Contemporary lens is a versatile ultra-wide prime that's ideal for landscape photography, street scenes, interiors, architecture, and creative portraiture. Its 17mm focal length captures expansive perspectives, while the f/4 maximum aperture allows for a slimmer and lighter construction without compromising sharpness or clarity. Whether you're putting together a lightweight landscape kit, capturing tight indoor spaces, or filming wide-angle vlogs, this lens delivers strong performance in a portable, travel-friendly size — measuring just 64 x 48.8mm and weighing under 225 grams.

Precision Optics, Compact Build

As part of Sigma’s I Series, this lens features a sleek all-metal construction, combining premium build quality with everyday usability. The optical design includes two SLD elements and three aspherical elements, effectively minimising distortion and aberrations, while a Super Multi-Layer Coating reduces flare and ghosting for clean, contrast-rich results. The internal focusing system, powered by a stepping AF motor, ensures fast and quiet autofocus — ideal for both stills and video. A close focusing distance of just 12cm enables engaging wide-angle close-ups, and the rounded 7-blade diaphragm helps produce soft, attractive bokeh. With dust- and splash-resistant construction and a solid brass bayonet mount, the 17mm f/4 is ready for the rigours of fieldwork while staying compact enough for everyday carry.