Normal-length prime lens is designed for FX-format Nikon F-mount cameras, however can also be used with DX models where it provides a 75mm equivalent focal length.. Fast f/1.4 maximum aperture is well-suited to working in low-light environments and also affords extensive control over depth of field for using selective focus techniques.. A Super Integrated Coating has been applied to individual elements to suppress internal reflections, flare, and ghosting for improved contrast and color accuracy when working in strong lighting conditions.. Autofocus system is compatible with select Nikon DSLRs that support D-type lenses, and offers quick and precise focusing performance.. Rounded seven-blade diaphragm promotes a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.