Sigma 12-24mm f/4 ART DG HSM Zoom Lens (for Canon EOS)
Top 12mm ultra-wide-angle performance.
The Sigma 12-24mm f/4 ART DG HSM Zoom Lens is a premium, full frame, wide-angle zoom designed to have minimal distortion in its wide-angle imagery. Part of the Art line, the Sigma 12-24mm f/4 DG HSM Art was created from decades of experience manufacturing wide-angle lenses. FLD glass elements, with performance equal to fluorite, provide for exceptional image quality while an updated Hyper Sonic Motor (HSM) uses 1.3x the torque for quick AF.
A constant f/4 aperture through the entire zoom range allows for greater ability in low light compared to previous models and the use of the largest aspherical element in the industry controls distortion, ghosting and flaring. An emphasis on edge-to-edge performance brings stunningly sharp and contrasty images to life. Ideal for many types of photography, the 12-24mm f/4 Art is perfect for landscape photography, architecture photography, interior photography and much more.
Everything photographers require of an ultra-wide-angle zoom -- and more:
The wide-angle zoom pioneer, Sigma has developed and launched many extraordinary products in this category over the decades. Now Sigma introduces an ultra-wide-angle zoom lens that is perfect for the era of ultra-high resolution digital cameras. The Sigma 12-24mm f/4 DG HSM Art offers an optimal package of center-to-edge image quality, minimized distortion, and minimum focusing distance. To achieve these qualities without compromise, Sigma has leveraged its lens design expertise and all of its leading-edge technologies. Advanced materials such as low-dispersion glass play a crucial role, while Sigma's advanced lens processing methods have made possible an aspherical lens of extremely large diameter.
Art line delivers high-level artistic expression:
Sigma is organizing all its interchangeable lenses into three product lines: Contemporary, Art, and Sports, each with a distinctive concept. Designed with a focus on sophisticated optical performance and abundant expressive power, Art line lenses deliver high-level artistic expression. Offering astonishing rendering performance that meets the highest standard, they are perfect for landscapes, portraits, still-lifes, close-ups, and casual snaps. They are made for the kind of photography that unleashes the inner artist. A powerful ally in every genre of photography, Sigma's Art line lenses excel both in the studio for formal works and outdoors for impressive shots of architecture, starry skies, and many other scenes.
Outstanding image quality -- from center to edges:
When it comes to ultra-wide-angle lenses, photographers require outstanding image quality from the center of the image to the edges without any distortion. Such performance is particularly valuable in architectural photography. The new Sigma 12-24mm f/4 DG HSM Art leverages Sigma's accumulated expertise in the processing and manufacture of aspherical lenses and incorporates multiple aspherical lenses produced with precision glass molding. The lens also features lens elements made with FLD ("F" Low Dispersion) glass, which is equivalent to fluorite in performance, and an optimized power distribution. Together, these features help minimize distortion, transverse chromatic aberration, and coma flare. As a result, image quality is outstanding across the image, all the way to the edges.
Exclusive low-dispersion glass:
The degree to which light is refracted by glass depends on the light's wavelength. This fact causes different colors of light to focus at slightly different points. The result is chromatic aberration, the color fringing that is particularly noticeable in telephoto lenses. Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. Yet residual chromatic aberration known as "secondary spectrum" may still remain. To minimize this secondary spectrum, which can be a serious issue with conventional lenses, Sigma lenses feature up to three types of exclusive low-dispersion glass offering superior performance: ELD (Extraordinary Low Dispersion), SLD (Special Low Dispersion) and FLD ("F" Low Dispersion). In particular, FLD glass offers ultra-low dispersion in combination with high transmittance and the anomalous dispersion characteristics of fluorite. Meticulous deployment of these types of exclusive low-dispersion glass and optimization of power distribution gives Sigma lenses superlative image rendition undiminished by residual chromatic aberration.
Flare and ghosting reduction:
From an early stage in the lens design process, flare and ghosting have been measured to establish an optical design resistant to strong incident light sources such as backlighting. Sigma's Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions. The included lens hood can be attached to block out extraneous light, which can have a negative effect on rendering performance.
|Without Super Multi-Layer Coating
||With Super Multi-Layer Coating
Featuring an 80mm aspherical lens -- the largest in this lens class:
The Sigma 12-24mm f/4 DG HSM Art features an 80mm large-diameter molded glass aspherical lens -- the largest such element in this class of lens. This lens is highly effective in minimizing distortion, spherical aberration, and coma flare.
Newly designed HSM for nimble AF control:
The newly designed Hyper Sonic Motor (HSM) is large, offers 1.3 times the torque of its predecessor. Even at low speeds, it offers exceptionally stable performance
Minimum focusing distance of 9.4 in. (24cm):
Leveraging the incredibly broad perspective of an ultra-wide-angle lens, photographers can compose close-up shots with impressively expansive backgrounds.
Mount with dust- and splash-proof construction:
The lens mount incorporates rubber sealing to protect the mount from dust and water drops. The front and rear lenses feature a water- and oil-repellent coating that is particularly useful when shooting in a drizzle, near ocean spray, and in a wide variety of other conditions.
f/4 brightness throughout the zoom range:
With f/4 throughout the zoom range, this lens is one stop brighter than conventional lenses. Photographers can now use a higher shutter speed that will crisply capture leaves fluttering in the breeze and other quick-moving subjects. A constant aperture during zooming also makes this lens exceptionally easy to use.
New material TSC (Thermally Stable Composite):
To ensure precise operation, internal parts feature generous use of metal and Thermally Stable Composite (TSC), which is highly compatible with metal parts.
The 9-blade rounded diaphragm creates an attractive blur in the out-of-focus areas of the image.
High-precision, rugged brass bayonet mount:
The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.
Compatible with Mount Converter MC-11:
Mount Converter MC-11 allows you to use your Sigma SA mount and Sigma EOS mount (Canon-compatible) interchangeable lenses with the Sony E-mount camera body. Owners of multiple camera systems can now get even more out of their valuable lens assets.
Evaluation with Sigma's own MTF measuring system (A1):
Sigma used to measure lens performance with a Modulation Transfer Function (MTF) measuring system using conventional sensors. However, Sigma has developed a proprietary MTF measuring system (A1) using 46-megapixel Foveon direct image sensors. Even previously undetectable high-frequency details are now within the scope of quality control inspections. All Sigma 12-24mm f/4 DG HSM Art lenses are checked using this A1 system before they are shipped.
Ultra-high precision and quality -- all made in Japan:
With only a few minor exceptions, all of Sigma's manufacturing, including molds and parts, takes place under a single integrated production system in Japan. Sigma is now one of the very few manufacturers whose products are truly made in Japan. Sigma's sophisticated products have satisfied professionals and lovers of photography all over the world because the manufacturing is based on genuine craftsmanship, underpinned by the passion and pride of Sigma's experts.
Sigma USB DOCK for Sigma GLOBAL VISION lenses (optional):
With the optional Sigma USB DOCK, you can update your lens firmware and adjust the focus position and other settings. Simply connect the lens to the Sigma USB DOCK and the dock to a computer to use the dedicated Sigma Optimization Pro software and perform various types of customization and adjustment.
Continue using your favorite lens with a different camera body:
Leveraging unique know-how and resources, Sigma offers Mount Conversion Service, which will be available for the Sigma 12-24mm f/4 DG HSM Art and other Sigma interchangeable lenses. Sigma will convert the current lens mount internal components, allowing you to continue using your favorite Sigma lenses from the new product lines with a different camera body. Thanks to this service, you can use a favorite lens for many years to come, unrestricted by your original choice of camera system.