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.