Sigma 18-50mm f/2.8 Contemporary DC DN

Compact and lightweight universal zoom lens with a high constant aperture of f/2.8 throughout the entire zoom range. The model is available for various bayonet mounts: Sony E, Leica SL, Fujifilm X, and Canon RF-S. The lens is intended for use with the crop-sensor mirrorless cameras from the aforementioned manufacturers. As a member of the Sigma Contemporary optics family, the model appeals with its affordable price.

In full-frame equivalent, it covers a sought-after focal length range of approximately 27 to 75 mm. The optical formula of the Sigma 18-50mm f/2.8 Contemporary DC DN consists of 13 elements in 10 groups, including one SLD glass and three aspherical lenses. The diaphragm of the model is 7-bladed and rounded. Autofocus is provided by a quiet, fast, and accurate stepping motor. The front frame of the lens features a 55 mm thread for filters. The body of the model measures 65x75 mm (in diameter and length, respectively) and the zoom lens weighs about 290 g. Note that versions for different bayonet systems may vary slightly in size and weight.