The black 60mm f/2.8 DN Lens for Sony E-mount Cameras from Sigma is a prime lens compatible with Sony E-mount cameras.With a 90mm focal length equivalent in the 35mm format,this is a mid-Range telephoto length lens with numerous applications including portraiture.A maximum aperture of f/2.8 provides shallow depth of field and makes this lens effective in low light.The minimum Focus distance on this lens is 19.7″(50 cm)and its maximum magnification ratio is 1:7.2.A newly developed linear auto focus motor provides accurate and quiet focusing which is ideal when shooting video.With Special Low Dispersion (SLD) glass elements and glass molded aspherical elements,this lens minimizes chromatic aberrations for sharp,high resolution images. A seven-bladed diaphragm Creates an attractive blur in the out of focus areas. 60mm lens for Sony E-mount Cameras mirrorless cameras with a 90mm equivalent focal range. Maximum aperture of f/2.8 is effective in low light and provides shallow depth of field. Linear auto focus motor provides smooth, quiet and accurate autofocus. Special Low Dispersion glass and aspherical elements minimize aberrations to provide sharp imaging throughout the frame. Part of Sigma’s new “Art” class of fast aperture,sharp prime lenses.