Part of the Sigma Contemporary Line whose goal is to deliver high optical performance that is balanced by optimal size and weight, this Sigma 45mm f/2.8 DG DN lens is normal-length prime lens designed for full frame Sony FE-mount mirrorless cameras. On a APS-C model, it provides an equivalent focal length of 68mm. This 45mm lens features a bright and fast constant f/2.8 maximum aperture that is suited for working in challenging lighting condition as well as providing improved depth of field control. Its optical design suppresses spherical aberrations to achieve large soft, rounded bokeh in the background while enhancing the three dimensional impression of the subject. Combined with a light weight of 215g, compact dimensions of 64.8 x 46.2 mm, and a 24cm minimum focus distance, this lens is ideal for highlighting subjects in a variety of photography situations that range from travel snap shots to tabletop close-ups. The optics is complemented by a stepping AF motor that delivers precise, high-speed and quiet autofocus performance which benefits both stills and video applications. Full-time manual control is available. A rounded seven-blade diaphragm affords a smooth and pleasing bokeh quality. For working in harsh environmental conditions and increased robustness, rubber sealing is added in the mount design to render the lens dust- and splash resistant, and the bayonet mount is constructed from brass to improve mounting accuracy and rigidity. In addition, a lens hood is supplied to protect the front element and prevent stray light from causing flare.
