Sigma 150-600mm DG OS HSM C lens. The Sigma 150-600mm F5-6.3 DG OS HSM | Contemporary is designed to achieve a lightweight and compact construction for higher usability. Sigma have a special emphasis on this lenses optical performance by incorporation of 1 FLD and 3 SLD glass elements, optimization of lens power distribution and minimized chromatic aberration of magnification. An issue for hyper-telephoto lenses in particular at the telephoto end, optical aberrations have been minimized throughout the zoom range.
This lens incorporates 1 FLD (“F” Low Dispersion) glass elements, which have performance equal to fluorite, and 3 SLD (Special Low Dispersion) glass elements, and compensates for color aberration at the utmost. Chromatic aberration in particular, which could be visible especially towards the telephoto-end even when stopped down, is corrected by the optimized design of glass elements including FLD lenses.
The Sigma 150-600mm DG OS HSM C lens compact and lightweight, enabling easy handling and making it possible to do handheld photography for a longer period of time. The tripod socket is detachable so that the lens can be carried by itself. Without the tripod socket, it also fits well into limited space for storage. Moreover, the tripod socket is made of magnesium which is light and strong at the same time. The tripod socket may be detached and replaced with a rubber protective cover PT-11 to further reduce weight and make handheld photography an even more lightweight and convenient experience. This lens is the optimal choice for photographers who desire hyper-telephoto functionality while staying light on their feet.