Sigma looked to create a peak portrait prime with the Sigma 85mm f/1.4 DG HSM Art Lens for L-Mount, and they delivered an optic with high performance, a large f/1.4 aperture, and a variety of technologies. This lens offers a super-fast f/1.4 aperture that is great for getting images with an exceptionally shallow depth of field and smooth bokeh. It also uses two SLD elements, one anomalous partial dispersion/high-refractive index element, and one aspherical element that minimize aberrations and ensures a crisp, clear image. A Super Multi-Layer coating helps by suppressing flare and ghosting.
For operation, a Hyper Sonic AF motor provides fast, accurate focusing and a large focusing ring permits manual focus override for making fine adjustments. A rounded 9-blade diaphragm also helps create round, smooth bokeh. It is made from a thermally-stable composite material that is light and durable and it has a brass bayonet mount.
With all the resolving power for 50-megapixel or higher ultra-high-megapixel cameras, this is the ultimate lens for portraits and more.
Portrait photographers demand the attractive bokeh effect that large-diameter lenses offer, as well as outstanding resolution. Fulfilling the exacting standards of the Art line, the SIGMA 85mm F1.4 DG HSM | Art delivers both of these elements at the highest level. The bokeh effect is so precise, you can focus on the pupil of the subject’s eye while blurring the eyelashes. Adding to the effect, the area in focus is extremely high-resolution while the bokeh area is very attractive in appearance. The SIGMA 85mm F1.4 DG HSM | Art incorporates 14 lens elements in 12 groups, a remarkable structure that helps the lens deliver ultra-high-resolution. This lens is therefore an excellent match for full-frame cameras offering 50-megapixel or higher resolution.
To create a top-performing 85mm F1.4 lens, SIGMA leveraged its latest innovations in design and materials. The result is the ultimate lens for portraits. By taking chromatic aberrations to the absolute minimum, this lens offers performance that goes beyond, including incredibly sharp resolution and a beautiful bokeh effect.
Ultra-high-megapixel full-frame cameras offering 50-megapixel or higher resolution are now available, and nothing will bring out the performance potential of these cameras better than the fundamental performance of the lens.
SIGMA 85mm F1.4 DG HSM | Art incorporates two elements made of SLD (Special Low Dispersion Glass) and one element with a high rate of anomalous partial dispersion and a high index of refraction. These features help ensure a clear image throughout the plane. The optical system also minimizes sagittal coma flare for outstanding image quality without streaking—even at wide-open aperture.
|The beautiful bokeh effect that only a large-diameter lens can offer||Designed to minimize flare and ghosting|
|Elements made of SLD (Special Low Dispersion) glass and an optimized power distribution help minimize axial chromatic aberration. In the areas in front of and behind the point of focus, the optical system produces an attractive and natural bokeh effect by producing a smooth gradation of focus and minimizing streaking.||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. In addition, SIGMA’s Super Multi-Layer Coating helps further reduce flare and ghosting and provide sharp, high-contrast images even in backlit conditions.|
Going beyond outstanding optical performance, SIGMA has added all its latest technologies for outstanding usability. Newly designed HSM, dust/splash-proof construction, -this is the long-awaited prime lens from the Art line.
|Newly designed HSM for nimble AF control||High-precision, rugged brass bayonet mount|
|The newly designed Hyper Sonic Motor (HSM) offers 1.3 times the torque of its predecessor. Even at low speeds, it offers exceptionally stable performance, and the updated AF algorithm helps ensure nimble autofocus performance. In addition, full-time manual focus override allows the lens to be switched to manual focus simply by rotating the focus ring—even during continuous AF.||The lens mount incorporates rubber sealing to protect the mount from dust and water drops. While the brass mount combines high precision with rugged construction with its treated surfaces to offer enhanced strength contributing to the exceptional durability of the lens.|
|The 9-blade rounded diaphragm creates an attractive blur in the out-of-focus areas of the image.|
|Lens Mount||Leica L|
|Angle of View||28.6°|
|Minimum Focus Distance||2.79' / 85 cm|
|Optical Design||14 Elements in 12 Groups|
|Diaphragm Blades||9, Rounded|
|Filter Size||86 mm (Front)|
|Dimensions (ø x L)||3.73 x 4.97" / 94.7 x 126.2 mm|
|Weight||2.5 lb / 1130 g|