The Sigma 60mm F2.8 DN | A (E-mount) Lens is a prime lens compatible with Sony E-mount cameras. It has a 90mm focal length equivalent in the 35mm format and has numerous applications including portraiture. The maximum aperture of f/2.8 of the Sigma 60mm F2.8 DN | A (E-mount) lens provides shallow depth of field and makes it lens effective in low light. With Special Low Dispersion (SLD) glass elements and glass molded aspherical elements, the Sigma 60mm F2.8 DN | A (E-mount) lens minimizes chromatic aberrations for sharp, high resolution images. It also comes with a seven-bladed diaphragm creates an attractive blur in the out of focus areas.