Sigma 50-100mm f1.8 DC HSM Lens - Sigma Fit
Zoom lens that delivers prime lens-level image quality with a large F1.8 aperture throughout the zoom range
Pairing a versatile range of telephoto focal lengths with a fast constant maximum aperture, this 50-100mm f/1.8 DC HSM Art Lens from Sigma is designed for APS-C-format Sigma SA-mount cameras, and provides a 75-150mm equivalent focal length range. The bright constant maximum aperture offers consistent low-light performance throughout the zoom range and also affords greater control over focus placement for shallow depth of field and selective focus applications. Complementing the versatile telephoto range is a sophisticated optical design that incorporates three F Low Dispersion elements, one Special Low Dispersion element, and one high-refractive index, high-dispersion glass element.
This combination of low dispersion designs works to noticeably reduce chromatic aberrations and color fringing throughout the zoom range, as well as deliver a high degree of contrast and clarity. Additionally, a Super Multi-Layer Coating has been applied to lens elements to reduce lens flare and ghosting to benefit working in strong lighting conditions. An unprecedented combination of focal length and speed, this 50-100mm f/1.8 lens offers a variety of favored telephoto perspectives in combination with a flexible maximum aperture.
Complementing the imaging capabilities is a refined physical construction with internal focus and zoom mechanisms to limit the overall length of the lens during use. A Hyper Sonic AF motor affords quick focusing speeds and quiet performance as well as the ability to manually override focus at any time for greater control. Also suiting quick shooting applications, the nine-blade diaphragm has been constructed from fluorine-coated polycarbonate, along with a carbon feather film for exceptionally smooth, controlled performance when photographing at high shooting speeds. Contrasting this, a tripod collar is integrated into the design, too, for greater stability when working atop a tripod or monopod.
FLD glass, SLD glass, and high-refractive index, high-dispersion glass help minimize aberrations
To help minimise axial and transverse chromatic aberration, this lens features an optimal arrangement of three FLD (“F” Low Dispersion) glass elements, one SLD (Special Low Dispersion) glass element, three high-refractive index SLD glass elements, and one high-refractive index, high-dispersion glass element. By including one or more low-dispersion element in every element group, this lens ensures outstanding image quality throughout the zoom and focal range. * FLD glass is ultra-low-dispersion glass that offers performance of the highest level. Highly transparent, its refractive index and dispersion are extremely low as compared to conventional types of glass. It offers characteristics very similar to those of fluorite, which is valued for its high anomalous dispersion. These characteristics minimise residual chromatic aberration (secondary spectrum), which cannot be corrected by ordinary optical glass, while helping to produce sharp, high-contrast images.
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.
Extra-long Hood (Supplied)
The included lens hood is extra-long and features an antireflective coating to manage unwanted light. The hood also features rubber and anti-slip textures to make it easier for the photographer to hold while shooting.
TSC used for a more compact structure and enhanced performance
Since new material Thermally Stable Composite (TSC) is highly elastic, it exhibits minimal deformation. Parts made of TSC are therefore less prone to develop gaps between each other over time. The SIGMA 30mm F1.4 DC DN | Contemporary features a lens barrel and aperture parts made of TSC, which contribute both to the compactness of the lens and the smooth functioning of the aperture system. TSC helps increase the precision of cells holding lens elements and parts related to the focus lens group, further enhancing lens performance.
- Sigma SA Mount/APS-C Format
- 75-150mm (35mm Equivalent)
- Aperture Range: f/1.8 to f/16
- One SLD and Three FLD Elements
- One High-Refractive Index Element
- Super Multi-Layer Coating
- Hyper Sonic AF Motor
- Internal Zoom and Focus; MF Override
- Rounded 9-Blade Polycarbonate Diaphragm
- Fixed, Rotating Tripod Collar