"SIGMA 60mm F2.8 DN ART Lens With their compact bodies and a diverse range of design, mirrorless interchangeable lens cameras have been evolving in their own unique way. To achieve a lens system corresponding to the cameras of the new era shaped by such thoughts, the high-performance mid-range telephoto lens for mirrorless interchangeable lens cameras offers Sigma's original innovation in a form that is more polished and refined than ever before. In order to maximize performance of mirrorless cameras, advanced optical technology is explored to achieve expressive performance worthy of Sigma's Art line. Featuring the natural perspective of mid-range telephoto lenses, together with a shallow depth of field, this lens allows the photographer to capture a single part of a subject. It brilliantly realizes the photographer's intentions|Superior optical performance and functionality. Sigma's original innovation is now more polished and refined than ever before.|Exceptional image quality, This lens features SLD (Special Low Dispersion) glass, which helps minimize axial and transverse chromatic aberration. Glass mold aspherical lenses help minimize coma.|Telecentric conscious design: The superior telecentric optical design improves the image quality throughout the frame.|Linear AF motor: This lens benefits from a linear AF motor which moves the lens unit directly without the need for gears or other extra mechanical parts. This system ensures accurate and quiet autofocusing, making the lens excellent for both recordin|Minimum focusing distance of 50cm|Incorporating Rounded diaphragm: The 7 blade rounded diaphragm creates an attractive round bokeh at large-aperture settings.|Brass made bayonet mount: This lens incorporates a brass made bayonet mount which has both high accuracy and durability. A special treatment to reinforce its strength is applied to the surface giving it greater strength and making it highly resistant"