Used Sigma 17-35 f/2.8-4 EX DG HSM

theSigma 17-35 f2.8-4 DG HSM Canon lens is a wide-angle lens, currently discontinued, designed for compatibility with Full Frame and APS-C formats . It is, as can be understood from the acronyms of the name, a lens with a focal length that operates in the 17-35 mm range and with a maximum aperture equal to f/2.8-4. The field angle, however, is included in the range of 103.7 - 63.5°. As regards the dimensions they can be considered standard for this type of lens, having measurements of 83x86 millimeters and a weight of 560 grams. Finally, this lens stands out for its Canon attachment, which is specific for mounting on camera bodies of this brand. It features a motorized focus which occurs via an ultrasonic Auto-Focus Ring-USM motor. The motor is of the HSM (Hyper Sonic Motor) type, thus guaranteeing independence from the camera motor and greater speed and precision in focusing. However, you can opt for manual focus using the specific function of switching from one mode to another. The Sigma 17-35 f2.8-4 DG HSM Canon lens was designed to create photos that satisfy the needs of the most demanding photographers. The use of SLD (Special Low Dispersion) glass for the lenses guarantees perfect compensation of chromatic aberration. Furthermore, the aspheric lenses are a guarantee for the correction of any image distortion. The result obtained with the use of this lens is therefore that of perfect color and image rendering, even when using digital reflex cameras.