The Tokina AT-X 12-28 PRO DX is a wide-angle lens for DSLR cameras with an APS-C (DX) sensor. The optical system found inside uses aspherical elements and super-low dispersion glass. On the front, as well as on the back, there is an aspheric lens with the dual task of maintaining sharpness at the corners of the image and reducing distortion. Thanks to the use of two different SD (Super-low Dispersion) glass elements, defects such as chromatic aberration are not present. The innovative focusing mechanism it has allows silent and extremely accurate focusing. The lens in question uses a diaphragm with nine rounded blades, which ensures pleasant bokeh for a wide-angle lens. the lens is equipped with a mechanism called Focus One-touch which allows you to change the automatic focus to manual simply by moving the relevant ring back and forth until you hear the typical noise. There is no image stabilizer. The internal parts are made of excellent quality plastic and the covering is also of the same material; the support, however, is made of metal. The latter does not have a rubber seal, therefore this lens is not resistant to atmospheric agents. Ideal for: Tokina AT-X 12-28 PRO DX, thanks to its small size and compact design, it is an easy to manage lens. It is ideal for creating photographs of great aesthetic impact and of different genres: landscapes, reportage, street photography and interior photography.