Sigma I Series. The Sigma 45mm f/2.8 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.

Practical Portrait Prime. This lens is the ideal “walking around” lens, with a portrait-length view that’s just slightly wide to better capture the subject’s environment. This, plus its f/2.8 maximum aperture, makes this a flexible and practical lens for everyday subjects and street photography.

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 67mm. To get closer to the 45mm apparent length on a crop sensor camera, consider the Sigma 24mm f/2 DG C, which has an equivalent focal length of 36mm, or the Sigma 35mm f/2 DG C, which has an equivalent focal length of 52mm.