Sigma 15mm f/1.4 DC Contemporary (Fujifilm X)

Sigma 15mm f/1.4 DC Contemporary is an ultra-wide-angle prime lens designed for APS-C mirrorless cameras, available for Sony E, Fujifilm X, and Canon RF mounts. The 15 mm focal length corresponds to approximately 22.5 mm in full-frame terms on Sony E and Fujifilm X versions and about 24 mm on Canon RF APS-C, providing a wide angle of view suitable for landscape, architecture, travel, street photography, astrophotography, vlogging, and video production. The f/1.4 maximum aperture allows shooting in low-light conditions and provides shallower depth of field compared with slower wide-angle lenses. The optical design consists of 13 elements in 11 groups and includes one FLD element, three SLD elements, and three aspherical elements, designed to help control aberrations, sagittal coma flare, and loss of sharpness toward the edges. The autofocus system uses a stepping motor designed for fast, accurate, and quiet focusing in both still photography and video, while focus breathing has been minimized to provide more natural focus transitions during recording. The minimum focusing distance is 17.7 cm, the maximum magnification ratio is 1:7.9, the diaphragm uses 9 rounded blades, and the filter thread measures 58 mm. The Sony E version weighs approximately 220 g, the Fujifilm X version about 225 g, and the Canon RF version about 240 g. The construction features dust- and splash-resistant sealing and a water- and oil-repellent coating on the front element. Sigma 15mm f/1.4 DC Contemporary is suitable for APS-C users looking for a bright, compact, and lightweight wide-angle lens suited to both photography and video production.