This 12mm f/2.0 AF Compact Ultra Wide-Angle Lens from Samyang is designed for APS-C format Sony E-mount mirrorless cameras and provides an 18mm focal length perspective equivalent to a 35mm full-frame format. Two extra-low dispersion elements, one aspherical element, and one hybrid-aspherical element are incorporated into the lens construction to help to control aberrations and distortions for increased clarity and sharpness. Ultra Multi-Coating has also been applied to all lens elements to reduce lens flare and ghosting for increased contrast and color fidelity. The bright f/2.0 maximum aperture excels in difficult lighting conditions and enables greater control over the depth of field and focus placement. The seven-blade diaphragm produces a quality of bokeh.