The Sigma 30mm f/1.4 DC DN Contemporary is a high-performance APS-C prime lens designed for mirrorless cameras, including Sony E-mount models. On Sony APS-C cameras, its 30mm focal length provides an approximately 45mm equivalent field of view, giving it a natural perspective that works particularly well for portraits, street photography, lifestyle images, and everyday shooting.

Its bright f/1.4 maximum aperture provides strong low-light capability and allows photographers to create a shallow depth of field with attractive background separation. Sigma uses a 9-element, 7-group optical construction with aspherical elements and high-refractive-index, high-dispersion glass to maintain image quality while keeping the lens compact.

Autofocus is driven by a stepping motor, designed to provide fast and quiet focusing for both photography and video. Sigma also states that the Sony E-mount version is designed to work with Sony’s Fast Hybrid AF system and face-recognition AF.

The lens has a 9-blade rounded diaphragm, a minimum focusing distance of 30cm, a maximum magnification ratio of 1:7, and accepts 52mm filters. The Sony E version measures approximately 64.8 × 73.3mm and weighs 265g, making it a particularly portable option for APS-C mirrorless systems.