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A mid-tele zoom lens delivers prime lens-level image quality with a large F1.8 aperture throughout the zoom range.
Features:
Designed to minimize flare and ghosting
From the start of the design process, Sigma measured flare and ghosting to establish an optical design that is resistant to strong incidental light sources such as backlight.
Featuring a newly designed Hyper Sonic Motor
To achieve outstanding image quality and F1.8 brightness, Sigma has enhanced its Hyper Sonic Motor (HSM). Optimizing the layout as well as the shapes of the individual parts, SIGMA has made the HSM 30 percent slimmer than before. In turn, this slimmer HSM has made possible the combination of F1.8 brightness and high image quality in a zoom lens.
Diaphragm unit designed for smooth operation
The diameter of the diaphragm is the second-largest in the Sigma lens lineup after that of the Sigma 200-500mm F2.8 / 400-1000mm F5.6 EX DG, necessitating smoother and quicker operation than ever before. To achieve this goal, the diaphragm blades feature Carbon Feather film, and the diaphragm unit features a new polycarbonate made with fluorine. Thanks to these innovations,diaphragm operation is exceptionally smooth even during continuous shooting, while the new polycarbonate is exceptionally durable and wear-resistant.
Inner focus and inner zoom
Since its release, the Sigma 18-35mm F1.8 DC HSM Art has been widely used for videography. Understanding that the Sigma 18-35mm F1.8 DC HSM Art and new Sigma 50-100mm F1.8 DC HSM Art will often be used together, Sigma has made the style of operation the same for both lenses, including the feel of focusing and zooming. Thanks to Sigma’s inner focus and inner zoom technologies, adjusting the focus and zoom rings does not change the length of the lens, and turning the zoom ring is not prone to cause focus shift.
Tripod socket designed for stable, comfortable operation
The tripod socket is compact, making operation more stable and comfortable during handheld photography. Parts with electro-less nickel plating help ensure the quality and durability of the 90-degree click stops and smooth switching between the horizontal and vertical position. The shape of the socket also enhances ease of handling and carrying when the lens is not attached to a camera.
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, our 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.
High-quality design features
To ensure precise operation, internal parts feature generous use of metal and Thermally Stable Composite (TSC), which is highly compatible with metal parts. The lens barrel is engraved with the year of release for instant access to this information.
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