55mm F1.4lens optics contains 6 elements in 5 groups and is based on Gauss formula. Itis a portrait lens designed for APS-C sensor size cameras. With plenty ofavailable mount options it can perfectly fit Sony, Fujifilm, Canon APS-Cmirrorless sensors and Olympus, Panasonic micro four third sensor mirrorlesscameras. Offering an full frame equivalent of 85mm focal length it is alsogreat for close-up portraits. The lens price is very affordable. It producesexcellent bokeh effect on the shots of face close-up, half-length portrait,full-length portrait, and has good in-focus sharpness.