|APO||The lens incorporates low dispersion elements to minimize chromatic aberrations and ensure excellent sharpness and contrast even at maximum aperture.|
|EX||Professional lens with high quality optics and robust build. Meets the highest standards and provides excellent performance and flawless image quality unachievable with traditional optical technologies.|
|DC||The lens is designed only for APS-C digital cameras.|
|OS||The lens is equipped with optical image stabilizer. The stabilizer allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without stabilizer you will have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.
Sigma lenses for Olympus, Pentax and Sony digital SLR cameras are not equipped with optical image stabilizers because these cameras have built-in sensor-shift image stabilization technology.
|HSM||The lens is equipped with ultrasonic motor to provide very fast and virtually silent autofocus. Learn more|
|Position in the lineup|
|Sigma 50-150mm F/2.8 APO EX DC OS HSM||Feb 2011||⊗|
|Sigma 50-150mm F/2.8 APO EX DC HSM II||Dec 2007||⊗|
|Sigma 50-150mm F/2.8 APO EX DC HSM||Aug 2006||⊗|
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|Diagonal angle of view:||30.4°-10.4° (Canon APS-C)
|31.6°-10.8° (Nikon APS-C)
|27.9°-9.5° (Sigma APS-C)
|Lens construction:||21 elements in 15 groups, including:|
|Number of blades:||9|
|Closest focusing distance:||80 cm|
|Type of autofocus motor:||Ultrasonic (Canon EF)|
|Ultrasonic (Nikon F)|
|Ultrasonic (Sigma SA)|
|Full-Time Manual Focus:||Yes|
|Image stabilizer:||Canon EF|
|Stabilizer features:||Mode 1|
|Stabilizer efficiency:||up to 4 stops|
|Weight:||SA: 1350 g|
|Maximum diameter x Length:||SA: Ø86 x 198 mm|
|Materials:||High-quality plastic barrel|
|Filter size:||77 mm|
Design and Features
The lens barrel is large, heavy, made of high-quality plastic. The lens mount is metallic.
The lens features AF/M focus mode switch.
|AF||Autofocus mode with Full-Time Manual Focus.|
|M||Manual focus mode.|
The lens uses front filters with standard size of 77 mm which are easy to find. However, filters of such size are more expensive and mainly used with professional lenses.
The filter thread does not rotate during focusing which allows convenient use of different types of filters (including but not limited to polarizing and gradient).
The lens features optical image stabilizer, which, according to the manufacturer, compensates up to 4 stops of shutter speed. Theoretically it allows to capture sharp images of static subjects at shutter speeds down to 1/9 second at focal length of 150 mm(*).
* without the need to increase ISO sensitivity and/or use a tripod, at the same lighting conditions and at the same aperture
At the choice of the photographer the image stabilizer can operate in one of the following modes:
|Mode 1||Corrects vertical and horizontal camera shake. Mainly effective for shooting still subjects.|
|Mode 2||Corrects vertical camera shake during following shots in a horizontal direction.|
Canon and Sigma versions of the lens are now discontinued.
|Camera:||Canon EOS 50D|
|Sensor size:||22.3×14.9 mm|
|Distortion at 50 mm:||-1.17 %|
|Distortion at 150 mm:||+0.34 %|
|Vignetting at 50 mm F/2.8:||-0.92 EV|
|Vignetting at 150 mm F/2.8:||-1.21 EV|
|Efficiency of Image Stabilizer:||up to 3 stops|
|Sensor size:||23.6×15.6 mm|
|Distortion at 50 mm:||-1.1 %|
|Distortion at 150 mm:||+0.3 %|
|Vignetting at 50 mm F/2.8:||-0.72 EV|
|Vignetting at 150 mm F/2.8:||-0.98 EV|
|User Manual. Multilingual, Adobe PDF, 2 MB|
|Prime lenses for Canon EOS DSLR cameras|
Alternatives (AF, 44-168 mm)
|Sigma 50-150mm F/2.8 APO EX DC HSM||2006||⊗|
|Sigma 50-150mm F/2.8 APO EX DC HSM II||2007||⊗|
|Tokina AT-X Pro 535 AF SD 50-135mm F/2.8 DX||2006||⊗|