Sigma 70-200mm f/2.8 EX DG OS HSM lens

The Sigma's APO 70-200mm F2.8 EX DG OS HSM was announced in 2010, is an EX Lens meaning its in Sigma's high-end line up of lenses Up to 4-stops of correction OS (Optical Stabilizer) help reduce blurring associated with hand held motion at low shutter speeds. Features a HSM AF motor for silent auto-focus and a constant maximum aperture of f/2.8 throughout the zoom range. ^[1]

10 relations: Aperture, Autofocus, Canon Inc., Chromatic aberration, Focusing, Image stabilization, Nikon, Photographic filter, Sigma, Sigma Corporation.

Aperture

In optics, an aperture is a hole or an opening through which light travels.

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Autofocus

An autofocus (or AF) optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area.

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Canon Inc.

is a Japanese multinational corporation specializing in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers, computer printers and medical equipment. It's headquartered in Ōta, Tokyo, Japan."." Canon. Retrieved on 13 January 2009. Canon has a primary listing on the Tokyo Stock Exchange and is a constituent of the TOPIX index. It has a secondary listing on the New York Stock Exchange.

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Chromatic aberration

In optics, chromatic aberration (abbreviated CA; also called chromatic distortion and spherochromatism) is an effect resulting from dispersion in which there is a failure of a lens to focus all colors to the same convergence point.

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Focusing

Focusing is a psychotherapeutic process developed by psychotherapist Eugene Gendlin.

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Image stabilization

Image stabilization (IS) is a family of techniques that reduce blurring associated with the motion of a camera or other imaging device during exposure.

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Nikon

(or), also known just as Nikon, is a Japanese multinational corporation headquartered in Tokyo, Japan, specializing in optics and imaging products.

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Photographic filter

In photography and videography, a filter is a camera accessory consisting of an optical filter that can be inserted into the optical path.

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Sigma

Sigma (upper-case Σ, lower-case σ, lower-case in word-final position ς; σίγμα) is the eighteenth letter of the Greek alphabet.

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Sigma Corporation

is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories.

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Redirects here:

Sigma 70-200mm f/2.8 EX DG OS HSM, Sigma APO 70-200mm F2.8 II EX DG MACRO HSM lens, Sigma APO 70-200mm f/2.8 II EX DG MACRO HSM lens.

References

[1] https://en.wikipedia.org/wiki/Sigma_70-200mm_f/2.8_EX_DG_OS_HSM_lens

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