Sigma 17mm f/4 DG DN Contemporary Lens (Sony E)

The Sigma 17mm f/4 DG DN Contemporary is an ultra-wide prime lens that delivers an expansive 17mm coverage in a remarkably compact form factor, making it an ideal choice for landscape, architectural, and street photography. The f/4 aperture provides sufficient light-gathering capability while maintaining the lens's portable design, allowing photographers to carry professional-grade wide-angle performance without the bulk of traditional alternatives. The DG DN Contemporary optical formula ensures sharp, distortion-controlled imagery across the frame, making it equally suited to both full-frame and APS-C Sony E-mount systems.

The Tiny Ultra-Wide

This ultra-wide 17mm prime delivers an expansive perspective in a featherweight package, weighing just 225g and measuring a mere 64 x 51mm. The f/4 aperture balances light transmission with compact dimensions, while the optical formula—featuring two SLD elements and three aspherical surfaces—achieves exceptional sharpness and minimal distortion across the frame. Internal focusing with a stepping AF motor ensures responsive autofocus performance for both stills and video work. The 12cm minimum focus distance enables creative close-range compositions, while the rounded 7-blade diaphragm renders smooth bokeh. Super Multi-Layer Coating suppresses flare and reflections for clean image quality. Dust and splash-resistant construction with a brass bayonet mount provides durability for demanding field use. Compatible with in-camera lens corrections and AF assist on supported Sony E-mount bodies.

I Series Lens

Part of Sigma's I Series, this 17mm ultra-wide is engineered for mirrorless photographers demanding premium optics without excess weight. The all-metal construction—featuring precision-machined aluminum barrel components—delivers both aesthetic refinement and structural integrity, drawing design principles from Sigma's professional cinema lens range. Knurled aperture and focus rings provide tactile feedback and confident manual control, while the intuitive AF/MF switch and aperture ring with 'A' position enable rapid exposure mode transitions. The included knurled metal lens hood complements the professional finish, and dual lens caps—conventional plastic and innovative magnetic metal—offer flexible attachment options. The magnetic cap pairs seamlessly with Sigma's optional CH-11 Magnetic Cap Holder for minimalist workflow efficiency. This lens represents the convergence of optical excellence, build quality, and user-centric design tailored to contemporary mirrorless systems.