EX (EX Lens)
The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.

IF (Inner Focus)
To ensure stability in focusing, this lens moves the inner lens group or groups without changing the lens' physical length.

HSM (Hyper-Sonic Motor)
This lens uses a motor driven by ultrasonic waves to provide a quiet, highspeed AF.

ASP (Aspherical Lens)
The aspherical lens complex allows freedom of design, improved performance, a reduced number of component lenses and a compact size.

DG (for DIGITAL & FILM)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.

12-24mm f/4.5-5.6 EX DG ASHPHERICAL HSM

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. Two pieces of molded glass and 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, built-in 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.

Price: £433

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AF MOUNTS
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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

Maximum Magnification
28cm

Filter Size
Rear Type (Gelatin Filter)

Dimensions
Diameter 87mm X Length 102.5mm

Weight
600g