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SIGMA’s Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions.
HSM ensures a silent, high-speed AF function and full-time MF by rotating the focus ring of the lens while autofocusing.
Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.
New A1 MTF measuring system.
Each lens is checked for previously undetectable high-frequency details using 46-megapixel Foveon direct image sensors.
Users will be able to connect the lens to a computer with a special USB DOCK and use easy-to-operate on-screen controls to create personal lens specifications.
SIGMA Optimization Pro software that allows the user to update the lens firmware and adjust focus position and other parameters.
The Sigma 24-35mm F2 DG HSM Art is the worlds first full frame F2 zoom lens. Covering a common prime lens lineup, the 24-35mm F2 DG HSM was designed for prime performance with the versatility of a zoom lens. Premium FLD glass, with performance equal to flourite, and seven SLD glass elements allow for outstanding image quality. A large diameter aspherical lens, a complicated element to manufacture, allows for a stunning level of brightness. This complicated optical formula creates outstanding image quality throughout the focal range, and even at the widest of apertures. An updated AF algorithm makes for smooth, accurate and fast autofocusing while multi layer coating control flare and ghosting. The Sigma 24-35mm F2 DG HSM Art is another notch on Sigma’s belt for pure photographic innovation.
SIGMA was determined to create a zoom lens that offers the same brightness and resolution as a fixed focal length lens: in other words, the highest level of optical performance. The result of this challenge was the SIGMA 18-35mm F1.8 DC HSM | Art, the world’s first zoom to offer a fast F1.8 aperture value throughout the zoom range. Building on this concept, SIGMA has developed the new SIGMA 24-35mm F2 DG HSM | Art for 35mm full-frame sensors. It allows photographers to carry one lens to do the work of three fixed focal length lenses, a 24mm, 28mm and 35mm – with F2 brightness and top optical performance. One package delivers flexible functionality and convenience. In particular, at the 24mm and 35mm focal lengths, this lens offers performance equivalent to that of two prime lenses in the Art line.
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, our Art line lenses deliver high-level artistic expression. With astonishing rendering performance, they are perfect for landscapes, portraits, still-lifes, close-ups, and general snapshots. They’re made for the kind of photography that unleashes the inner artist. Ideal for studio photography, they offer just as much expressive scope when capturing architecture, starry skies and many other scenes.
A large-diameter zoom lens covering the full frame image sensor. Optical performance equivalent to a fixed focal length lens throughout the entire zoom range. These are the concepts SIGMA 24-35mm F2 DG HSM | Art embodies. It covers the focal range 24-35mm, and 24mm, 28mm and 35mm are the commonly used prime lenses among photographers. In order to achieve an attractive bokeh effect at wide aperture, we have developed the world's first zoom lens for the 35mm full frame sensor with F2 aperture value throughout the zoom range*.
*Among 35 digital camera interchangeable lenses according to SIGMA research (June, 2015).
Delivering excellent functionality and convenience, one lens offers quality equivalent to that of three high-performance fixed focal length lenses at F2 brightness: 24mm, 28mm and 35mm. With a minimum focusing distance of 28cm and a maximum magnification ratio of 1:4.4, this lens is suitable for close-up shooting, portraits with an attractive bokeh and deep-focus landscape photography. Photographers have access to angles of view equivalent to those of three wide-angle lenses without having to switch lenses. While achieving the desired background effect can be difficult with a conventional wide-angle lens, the large diameter of this lens allows photographers to open the aperture wide and use the shallow focus to achieve stunning results.
The SIGMA 24-35mm F2 DG HSM builds on the concept of the SIGMA 18-35mm F1.8 DC HSM | Art, the world’s first zoom lens to offer F1.8 brightness throughout the zoom range. Thanks to its outstanding optical performance, this lens provides the same quality as the high-performance fixed focal length lenses in the Art line.
To realize a large-diameter zoom lens for full-frame cameras with F2 brightness, SIGMA designed each and every part with uncompromising care and quality. The lens incorporates large-diameter aspherical lens elements, which require advanced technologies to manufacture; one FLD (“F” Low Dispersion)* glass element; and seven SLD (Special Low Dispersion) glass elements, of which two are aspherical lenses. The advanced optics and optimized lens power distribution minimize spherical aberration, axial chromatic aberration and field curvature, resulting in outstanding optical performance. Even at widest aperture, this lens delivers breathtaking image quality.
*FLD glass is the highest-level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass, which has a low refractive index and low dispersion compared to conventioinal optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum), which cannot be corrected by ordinary optical glass, and ensures high-definition and high-contrast images.
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.
The inner focusing system eliminates front lens rotation, enhancing the lens's stability and allowing use of circular polarizing filters. This is particularly convenient for shooting video.
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.
When photographing with point light sources such as electric lights or reflections on a body of water in the background, the rounded 9-blade diaphragm helps produce an attractive bokeh effect—even at large-aperture settings.
All lenses in SIGMA’s new Art line come with a hood with a high-quality rubberized connector and feature a newly designed lens cap and AF/MF switch, and are designed for intuitive use and superior functionality. Inside, HSM (hypersonic motor) delivers high AF speed and extremely quiet performance. An enhanced algorithm offers even smoother automatic focusing. Full-time manual focus override is another key feature that leaves the artistic touches in the photographer’s hands. The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens. In both the external and internal parts, the optimized use of TSC (Thermally Stable Composite), an excellent match for metal parts, further contributes to the high-precision construction of the lens. In addition, the last three digits of the year the lens was offered for sale are engraved on the barrel for ease of reference.
The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function. By optimizing the AF algorithm, smoother AF is achieved. Also, this lens offers full-time MF by rotating the focus ring of the lens while autofocusing. It allows faster focus adjustment without the need to use the AF/MF Focus Mode Switch.
*The default setting of the Full-time MF function varies for each mount.
Conventionally it is considered essential to leverage the qualities of metal and polycarbonate in camera and lens layout design. A first for the industry, the barrel of the new series of SIGMA lenses features a new TSC (Thermally Stable Composite)* that offers minimal thermal shrinkage combined with exceptional hardness. It also offers 25% greater elasticity than polycarbonate. Since its thermal shrinkage is low, TSC matches well with metal parts, further contributing to the high-precision construction of the lens.*TSC (Thermally Stable Composite) offers thermal expansion characteristics similar to those of aluminum. Parts made with TSC deform less, making possible lens construction of extremely high precision. As compared to polycarbonate containing 20% glass, a commonly used material, TSC offers approximately 70% higher elasticity. As compared to polycarbonate containing 30% glass, it offers 25% higher elasticity. (Comparison is between SIGMA-produced components.)
The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.
Superior functionality across the lineup, thanks to SIGMA’s proprietary new A1 MTF measuring system.
There are three requirements for outstanding lenses: fine design, precise manufacturing and inspection that ensures compliance with all specifications. SIGMA lenses are born of well-thought-out design concepts and sophisticated, advanced Japanese manufacturing technology; the final clincher is our lens performance evaluation. We used to measure lens performance using conventional sensors. However, we've now developed our own A1* proprietary MTF (Modulation Transfer Function) measuring system using 46-megapixel Foveon direct image sensors. Applying this system, we check each lens in our new lines at our Aizu factory, our sole production site. Even previously undetectable high-frequency details are now within the scope of our quality control inspections, allowing us to deliver consistently high lens performance.
The 46 effective megapixel (4,800 × 3,200 × 3 layers) and 44 recording megapixel (4,704 × 3,136 × 3 layers) 23.5 × 15.7mm APS-C X3 direct image sensor captures all primary RGB colors at each and every pixel location, ensuring the capture of full and complete color. Using three silicon-embedded layers of photo detectors, stacked vertically to take advantage of silicon's ability to absorb red, green and blue light at different respective depths, it efficiently reproduces color more accurately, and offers sharper resolution, pixel for pixel, than any conventional image sensor. Since color moiré is not generated, the use of a low-pass filter is not required, meaning light and color, generated by the 46-megapixel APS-C X3 direct image sensor is captured with a three-dimensional feel.
With a few exceptions, all of SIGMA's manufacturing – right down to molds and parts – is carried out under a single integrated production system, in Japan. We are now one of the very few manufacturers whose products are truly "made in Japan." We like to think our products are somehow imbued with the essence of our homeland, blessed as it is with clean air and water, and focused, hard-working people. We pride ourselves on the authentic quality of SIGMA products, born of a marriage between highly attuned expertise and intelligent, advanced technology. Our sophisticated products have satisfied professionals and lovers of photography all over the world, because our manufacturing is based on genuine craftsmanship, underpinned by the passion and pride of our experts.
For our new product lines, we have developed exclusive SIGMA Optimization Pro software that allows the user to update the lens firmware and adjust focus position and other parameters. The user will be able to connect the lens to a computer with a special USB DOCK and use easy-to-operate on-screen controls to create personal lens specifications.
Corresponding AF Mounts
SIGMA / NIKON / CANON
Nikon mounts do not have an aperture ring. Some functions may not work depending on the camera model.This lens is incompatible with film SLR cameras with the exception of the Nikon F6 and Canon EOS-1v.
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