Sigma I Series. The Sigma 17mm f/4 DG C belong’s to Sigma’s 1 Series group of lenses, which is a collection that prioritizes compactness without sacrificing performance. These lenses offer all-metal construction with precision-cut aluminum, an elegant finish, and pleasingly tactile knurled focus and aperture rings.

Stepping Motor. Equipped with a stepping AF motor, this lens has admirable autofocus speeds for videography. This is complemented by a manual aperture ring and an AF/MF toggle with a raised arc shape for fast switching. Please note that the aperture ring is not de-clickable and has 1/3-stop clicks.

Ultra Wide Field of View. This lens captures an immense sense of space without the distortion and has a close focusing distance of under 5" for extreme closeups that still include the surrounding environment. With an f/4 maximum aperture, this lens isn’t ideal for low light environments. For a faster lens at a similar focal length, check out the Sigma 20mm f/2 DG C.

Try it with These E-Mount Cameras. The portable nature of this lens makes it a great option for shooters on the go and pairs well with slightly more compact cameras like the Sony ZV-E1 or the Sony Alpha a7C II. However, it’ll work with any E-mount system, including APS-C sensor cameras like the Sony a6600, where it will provide an equivalent focal length of around 25mm.