The Sigma 70mm f/2.8 EX DG Macro is a macro lens compatible with some mounts from Sigma, Sony, Canon and L-Mount. Among the optical characteristics of this product we find: focal length of 70 millimeters with a field angle of 34.4 degrees, maximum aperture of f/2.8, 13 lenses divided into 10 groups and 9 diaphragm blades, minimum focusing distance of 25 centimeters and a reproduction ratio of 1x. the Sigma 70mm f/2.8 EX DG Macro lens does not have image stabilization but tropicalization and, as regards focus, the product is equipped with Full Time MF but not with internal AF. Focusing occurs via an AF motor that does not include ultrasound. From a construction point of view, the lens does not have a tripod ring but is compatible with multipliers and, in the camera body, the lens hood is included. the Sigma 70mm f/2.8 EX DG Macro lens has an overall specific weight of 515 grams. The two-group sliding focus mechanism allows you to obtain sharp, bright images at any distance. Furthermore, the lens manages to reduce chromatic aberrations to a minimum even at close range thanks to the presence of two FLD glass lenses and two SLD glass lenses. . The low dispersion optical glasses also allow for the reduction of ghosting and flare. Ideal for: the fast and silent as well as versatile focusing makes the Sigma 70mm f/2.8 EX DG Macro lens ideal for professional photographers who need a product compatible with a series of accessories. The lightness of the lens also makes it particularly suitable for photographers who perform reportages.