Sigma has revealed details of two lenses that will be showcased at CP+: the 70mm f/2.8 DG MACRO Art and 105mm f/1.4 DG HSM Art, plus some future lenses for the Sony E-mount.
Two views of Sigma’s new 70mm f/2.8 DG MACRO Art lens, one showing the extending inner barrel and the lens with the supplied lens hood attached. (Source: Sigma.)
The 70mm f/2.8 DG MACRO | Art lens is the first macro lens in the Art line-up. It features an extended floating focus that moves two focus lens groups to different degrees. This focus-by-wire system, which eliminates the mechanical connection between the focus ring and the focus drive unit, causes the length of the lens barrel to change when focusing but provides a faster and more comfortable way to focus on close subjects. Autofocusing is driven by a coreless DC motor, which is controlled through the latest algorithm to provide optimum focus speed with reduced AF noise.
The optical design of this lens uses 13 elements in 10 groups, with two FLD glass elements to minimise axial chromatic aberration and two SLD glass elements plus one element with a high refractive index and high abnormal partial dispersion. It also includes a pair of aspherical lenses to optimise resolution in close-up shots. The rotation angle of the focus ring is large and full-time manual over-ride is supported for fine-tuning focus. The lens accepts 49 mm diameter filters and can focus to within 25.8 cm of subjects. It is dust- and splash-proof and has a diameter of 70.8mm and a minimum length of 105.8 mm and weighs 515 grams.
Although designed for DSLR cameras, and offered with Canon, Sigma, Nikon mounts, it will also be available with a Sony E mount. It is compatible with Sigma’s USB Dock, Sigma’s macro flash EM-140 DG and Sigma tele converters.
Sigma’s new 105mm f/1.4 DG HSM Art lens with its removable tripod foot in place. (Source: Sigma.)
Sigma has also announced a new fast prime 105mm f/1.4 DG HSM Art lens, the longest f/1.4 lens in the series and described by Sigma as a ‘bokeh master’. Designed for portrait photographers, its optical configuration comprises 17 elements in 12 groups and includes three FLD glass elements, two SLD glass elements plus one double-sided aspherical element. The optical system minimises axial chromatic aberration to deliver extremely high resolution coupled with ample peripheral light. In focus areas are extremely sharp, while out-of-focus areas combine a beautiful bokeh effect with natural colour rendition. Sagittal coma flare is also well controlled, making this lens ideal for capturing starry skies. Sigma’s Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and contrasty images, even in backlit conditions.
This lens has a minimum aperture of f/16 and features a nine-bladed iris diaphragm that closes to a circular aperture. Its minimum focusing distance is 100 cm, where it provides a maximum magnification ratio of 1:8.3. Built to professional specifications with dust- and splash-proof sealing its front element is protected by a water- and oil-repellent coating that makes cleaning easy. The supplied lens hood is made from CFRP (carbon fibre reinforced plastic), while the removable Arca-Swiss tripod socket is compatible with Arca-Swiss platforms and clamps. Its exclusive protective cover makes the lens easier to carry and use when shooting hand-held.
Weighing 1,645 grams, this lens has a diameter of 115.9 mm and an overall length of 131.5 mm. It will be offered with Canon, Sigma, Nikon mounts as well as the Sony E-mount. The Nikon mount version includes an electromagnetic diaphragm mechanism.
Pricing and availability information for these two lenses has not yet been released.
Sigma has also unveiled five additional Art prime lenses for Sony E-mount cameras with full-frame sensors, covering focal lengths between 14mm and 135mm. The new lenses, which can be fitted to the a full-frame Sony camera without requiring the Sigma MC-11 mount converter (which didn’t support continuous AF or fast autofocusing), will include a newly developed control algorithm that optimises the AF drive and maximises data transmission speed. These lenses will also be compatible with Sony’s Continuous AF (AF-C) and high-speed autofocus as well as in-camera image stabilisation and lens aberration corrections, which include corrections for peripheral illumination, chromatic aberrations, and distortion.
The new lenses, which will be released progressively, will mean the Sony E-mount line-up will include the following lenses: Sigma 14mm f/1.8 DG HSM Art, 20mm f/1.4 DG HSM Art, 24mm f/1.4 DG HSM Art, 35mm f/1.4 DG HSM Art, 50mm f/1.4 DG HSM Art, 70mm f/2.8 DG Macro, 85mm f/1.4 DG HSM Art, 105mm f/1.4 DG HSM Art and 135mm f/1.8 DG HSM Art. Release dates and pricing for each lens have still to be confirmed. For more information, visit https://www.sigma-global.com/en/lenses/.