Sigma’s own unique OS technology
This lens is equipped with Sigma’s unique OS function. This system allows the photographer to use shutter speeds approximately 4 stops slower than would otherwise be possible. As compensation for camera shake is visible in the view finder, the photographer can easily check for accurate focus and ensure there is no subject movement. The Optical Stabiliser unit has two modes, Mode 1 is ideal for general photography and Mode 2 is designed for panning subjects such as racing cars.
Superior image quality
Six SLD (Special Low Dispersion) glass elements provide excellent correction for colour aberration. The lens design provides correction for spherical aberration, ensuring high image quality throughout the entire zoom range.
F2.8 Large aperture throughout the entire zoom range
The narrow depth of field enables photographers to emphasise the subject and the large aperture provides a bright viewfinder image. Together with the OS function, they help the photographer confirm accurate focusing. The wide aperture also allows for faster shutter speeds making this lens perfect for sports photography.
Reduced ghosting and flare
The Super Multi-Layer Coating reduces flare and ghosting and provides high image quality even when the subject is backlit.
HSM (Hyper Sonic Motor)
The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function as well as full-time manual focusing capability.
Close focusing capability
This lens has a minimum focusing distance of 80cm and maximum magnification of 1:6.3, making it ideal for close-up photography.
This lens incorporates an inner focusing and inner zooming system. The overall length of the lens does not change during focusing and zooming, ensuring convenient handling. The inner focusing system also eliminates front lens rotation, making the lens particularly suitable for using circular polarising filters. A removable tripod collar (TS-21) is included as a standard component.
This lens has a rounded 9 blade diaphragm which creates an attractive blur to the out of focus areas of the image.
Sigma APO 50-150mm F2.8 EX DC OS HSM for Canon EOS DSLR
Sigma's proprietary OS (Optical Stabilizer) system offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible, enabling hand held tele-photography. Six SLD glass elements compensate for chromatic aberrations and provide high image quality throughout the zoom range.
The Super Multi-Layer Coating reduces flare and ghosting and ensures sharp and high contrast images even at the maximum apertures. The lens design adopts an inner focusing and inner zooming system to provide convenient handling and the HSM (Hyper Sonic Motor) ensures quiet and high speed autofocus while allowing full-time manual focus override. This lens has a minimum focusing distance of 80cm (31.5) and a maximum magnification ratio of 1:6.3. The rounded 9 blade diaphragm creates an attractive blur to the out of focus areas of the image.
The addition (sold separately) of Sigma's TELE CONVERTER 1.4x EX DG APO or 2x EX DG APO produces a 70-210 F4 AF telephoto zoom lens or 100-300 F5.6 AF telephoto zoom respectively.
Product Details: For use with smaller chip APS-c cameras only HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus Minimum focusing distance of 31.5 inches & with a maximum magnifications ratio of about 1:6.3 Compact design is only 7.8 inches long Compatible with Sigma APO Tele Converters A lens hood, front & rear lens caps and carrying case are included with the lens.
Lens Construction - 21 Elements in 15 Groups
Angle of View - 27.9-9.5 degrees
Number of Diaphragm Blades - 9
Mininum Aperture - f22
Minimum Focusing Distance - 80 cm / 31.5 in
Filter Size (mm) - Diameter77mm
Maximum Magnifications - 1:6.4
Dimensions(Diameter x Length) - (D) 86.4mm?(L) 197.6mm/3.4in.? 7.8 in