The Sigma 150-600mm F5-6.3 DG HSM OS Contemporary was designed by Sigma to achieve maximum portability and utmost image quality in a variable aperture hyper-telephoto zoom lens. Lightweight and compact, The Sigma 150-600mm OS Contemporary can handle any long-reach photographic situation one may encounter. This lens boasts updated Sigma technology such as a quiet and optimized Hyper Sonic Motor (HSM) and a new Optical Stabilizer (OS) with an accelerometer for improved panning photography both vertically and horizontally, essential for birding, wildlife and motor photography. The Sigma 150-600 Contemporary also touts a new zoom lock switch that can be locked at any focal length and a new manual override (MO) switch is incorporated for improved focusing control.
The OS (Optical Stabilizer) function features an acceleration sensor to ensure even higher precision. Two OS modes are available: Mode 1 for general photography and Mode 2 for motor sports and other applications requiring panning. In Mode 2, the acceleration sensor teams up with the Intelligent OS and its updated stabilization algorithm to deliver effective stabilization while you move the camera horizontally, vertically, or diagonally - regardless of the position of the lens. This feature helps ensure effective panning and outstanding capture of moving subjects.
The HSM (Hyper Sonic Motor) ensures high speed and quiet AF. With the further enhanced AF algorithm compared to previous models, continuous AF (AF-C) improves the focusing efficiency by approximately 5%.
The Sigma 150-600mm DG HSM OS Contemporary lens incorporates 1 FLD (F Low Dispersion) glass element, which has performance equal to fluorite, and 3 SLD (Special Low Dispersion) glass elements, and compensates for chromatic 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 the FLD lens.
The new zoom lock switch enables the zoom ring to be locked at any focal length. It can be fixed at the photographer™s desirable focal length, which allows stable shooting whether the lens is positioned upward or downward. It also helps during long exposure photography.
Forefront and rear lenses incorporate a water and oil-repellent coating that allows water to be wiped away easily and prevents oil and fat from sticking to the surface, even in challenging shooting conditions. At the same time, the maintenance of the lens surface becomes easier.
In addition to AF/MF, MO (Manual Override) is incorporated as one of the options of the focus mode switch. By setting it to the MO position, it switches to manual focus by rotating the focus ring even during continuous AF. With AF position, standard full-time manual focus is available.
As with the SIGMA 150-600mm F5-6.3 DG OS HSM from the Sports line, the lens mount incorporates rubber sealing to protect the mount part from dust and water drops.
The 9 blade-rounded diaphragm creates an attractive blur to the out-of-focus areas of the image.