As a member of the EX series of lenses this third generation Sigma lens is designed with the highest level of optical technology & augments its predecessor with the addition of the Hyper-Sonic Motor (HSM) ensuring a quiet, high speed AF as well as full-time manual focusing capability. Housed in compact construction, the Sigma 24-70mm is a large aperture standard zoom lens ideal for all general photography including portraiture & landscapes. Physically, the shortest lens in the category, its overall length is 3.7 inches/94.7mm. With excellent optics, this could be the foremost performing lens in the category with stunning speed, clarity & color. Intricate lens construction
Includes:: Super Multi Layer Coating reducing flare & ghosting; the combination of ELD (Extraordinary Low Dispersion) & two SLD (Special Low Dispersion) glass elements & three aspherical lenses provide excellent correction of all types of aberrations. Superior optical performance is ensured throughout the entire zoom range with the minimum focusing distance being 15in/38cm & maximum magnification ratio being 1:5.3. The rounded 9 blade diaphragm gives a natural look to backgrounds & foregrounds.