Delivering superior optical performance & functionality, the Sigma 19 mm f/2.8 DN A Wide-angle Prime Lens is compatible with the Sony E mount. Wide-angle lens Forming part of Sigma's Art line, the 19 mm f/2.8 Lens has been designed to meet the expectations of creative photographers. With a 3.5cm focal length equivalent of 28.5 mm, this 19 mm f/2.8 Wide-angle Lens is ideal for landscapes, architecture, interior photography & more. Enhanced design Three glass mold aspherical lenses help correct distortion & field curvature, while the inner focusing system corrects the fluctuation of aberration for maintaining image quality regardless of focusing position. In addition to delivering exceptional image quality, Sigma have optimised the design so it feels great to use with the use of metal on almost all external areas, varying textures for distinguishing each part of the lens & the simple shape of the focus ring. Unleash your creativity with the high performance Sigma 19 mm f/2.8 DN A Wide-angle Prime Lens.