When used with a 35mm or full-frame digital SLR camera, this ultra wide angle zoom lens offers 122 degree super wide angle of view along the diagonal axis.

Sigma will always be guaranteed a place in the history books as pioneers of the wide-angle zoom lens. Our advanced super wide angle technology was developed far earlier than any of our competitors.
Sigma designed and produced the first wide-angle zoom lens, the «zoom gamma 21-35mm F3.5-4.2», in 1979. The wide-angle zoom category didn’t even exist before this date. The market comprised only standard and telephoto zoom lenses with most people believing that wide angle zooms were impossible to develop. However Sigma’s advanced design and pioneering technology went on to prove them wrong and strongly influence subsequent product development.

Optimized for Digital SLR Cameras

Four Special Low Dispersion (SLD) glass elements are provided for effective compensation of color aberration, which is a common problem with super-wide angle lenses. Three Aspherical lenses, including two molded glass aspherical lens elements, offer excellent correction for linear distortion as well as all types of aberration. It is an ideal lens for Digital SLR Cameras as well as film SLR cameras.

HSM (Hyper Sonic Motor)

Equipped with Hyper Sonic Motor (HSM) for Sigma, Nikon and Canon.
It is easy to revert to Manual Focus by simply turning the focusing ring and overriding the AF. An inner focus system provides high performance and convenience. The non-rotating lens barrel perfectly suits the matched petal shaped lens hood.

Minimum focusing distance of 28cm/11in. at all focal lengths.

12-24mm F4.5-5.6 EX DG lens offers a minimum focusing distance of 28cm/11in. at all focal lengths.
The super-wide angle’s useful range of view offers the photographer greater freedom of expression.

Fixed Petal-type hood is incorporated

This lens is equipped with a fixed Petal-type hood to obtain a superior extraneous light-blocking effect.

12-24mm F4.5-5.6 EX DG ASPHERICAL HSM LENS RECEIVES EISA EUROPEAN LENS OF THE YEAR 2004-2005 AWARD.

The 12-24mm F4.5-5.6 EX DG ASPHRICAL HSM ultra-wide zoom lens, with an incredible 122-degree angle of view, wins EISA EUROPEAN LENS OF THE YEAR 2004-2005 award. EISA is the largest editorial multimedia organisation in Europe, with a membership of fifty Audio, Mobile Electronics, Video and Photo magazines drawn from twenty European countries. Every year, the EISA Awards celebrate new photographic products such as interchangeable lenses, digital and film compact and SLR cameras. The Awards applaud the products that combine the most advanced technology with the most desirable features. The lens was awarded this prestigious title because of its incredible 12mm focal length, its suitability for both digital and traditional film SLRs and its excellent correction of distortion and flare and last but not least, its reasonable price.

12-24mm F4.5-5.6 EX DG ASPHERICAL HSM won "Camera Grand Prix 2004" award fro m Camera Press Club (Japan)

12-24mm F4.5-5.6 EX DG ASPHERICAL HSM awarded Camera Grand Prix 2004 Special Prize by Camera Press Club. Except fish-eye lenses, this super-wide angle lens is the only lens that has 12mm focal length and can be used with Digital SLR cameras as well as film SLR cameras. Special Low Dispersion (SLD) glass elements are provided for effective compensation of color aberration, which is a common problem with super-wide angle lenses.

Lens Construction	16 Elements in 12 Groups
Angle of View	122 - 84.1 degrees
Number of Diaphragm Blades	6 Blades
Minimum Aperture	F22
Minimum Focusing Distance	28cm / 11 in.
Maximum Magnification	1:7.1
Filter Size	Rear Type (Gelatin Filter)
Dimensions	Diameter 87mm X Length 102.5mm 3.4 in. x 3.9 in.
Weight	600g / 21.6 oz.
Corresponding AF Mounts	[12-24mm F4.5-5.6 EX DG Aspherical HSM] Sigma, Canon, Nikon (D) [12-24mm F4.5-5.6 EX DG Aspherical] Sony/Minolta (D), Pentax

لنز دوربین عکاسی سیگما 12-24mm F4.5-5.6 EX DG ASP/HSM

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