The 7Artisans 55mm f1.4 mark ii APS-C lens is made of 5 groups of 6 optical structures, is great for portrait photography. It can be used in facial close-up, half-length portrait and full-body portrait to obtain excellent background blur effect. Manual Focus Prime Fixed Lens features smooth focusing operation and it can offer you great shooting experience. Compared with the mark i, lens material, the quality of image, blur effect and etc. have improved.