|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.|
|DG||The lens is designed for full-frame SLR cameras but can be also used on APS-C SLR cameras.|
|HSM||The lens is equipped with ultrasonic motor to provide very fast and virtually silent autofocus. Learn more|
|Position in the lineup|
|Sigma 800mm F/5.6 APO EX DG HSM||Feb 2005||⊗|
|Sigma 800mm F/5.6 APO EX HSM||Jun 1999||⊗|
|Sigma 800mm F/5.6 APO||Feb 1991||⊗|
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|Maximum format:||35mm full frame|
|Diagonal angle of view:||3.1° (35mm full frame)|
|2.4° (Canon APS-H)|
|1.9° (Canon APS-C)|
|2° (Sony APS-C)|
|2° (Nikon APS-C)|
|2° (Pentax APS-C)|
|1.8° (Sigma APS-C)|
|Lens construction:||12 elements in 9 groups, including:|
|Number of blades:||9|
|Closest focusing distance:||700 cm|
|Type of autofocus motor:||Ultrasonic (Canon EF)|
|No motor (Minolta/Sony A)|
|Ultrasonic (Nikon F)|
|No motor (Pentax K)|
|Ultrasonic (Sigma SA)|
|Full-Time Manual Focus:||Yes (Ultrasonic)|
|Weight:||SA: 4900 g|
|Maximum diameter x Length:||SA: Ø156.5 x 521 mm|
|Filter size:||46 mm (rear)|
Design and Features
The lens barrel is large, heavy, made of metal. The lens mount is metallic.
The lens features Sigma’s Dual Focus for switching the lens between autofocus and manual focus modes. Please refer to the article dedicated to Sigma 20mm F/1.8 EX DG Aspherical RF for more information on Dual Focus system.
Canon version of the lens is equipped with ultrasonic motor, the autofocus should be virtually silent and fast.
Versions of the lens for Canon EF, Nikon F и Sigma SA mounts do not feature optical image stabilizer. It is a significant disadvantage for a lens of such class - the need for image stabilization only grows with increasing of focal length. In order to obtain sharp images with this lens, you will need to use a tripod or shutter speeds not longer than 1/800 second which may require in some cases increasing the ISO setting and will lead to noisy images.
2) On a tripod
|Prime lenses for Canon EOS DSLR cameras|
|Pentax lenses: compendium|
Alternatives (AF, 704..896 mm)
|Canon EF 800mm F/5.6L IS USM||2008||⊗|