Designed specifically for Sony full frame E-mount cameras, this new high speed prime combines advanced optical technology with a fast, quiet and precise auto focus system. The bright f/1.4 maximum aperture takes the stress out of working in lighting conditions, and provides shallow depth of field for greater point of focus control. UMC anti-reflective coatings and three aspherical lens elements combine to limit chromatic and spherical aberrations for outstanding image clarity, contrast and color fidelity. The precisely configured 9-blade aperture delivers smooth, pleasing bokeh at all settings.