Sigma 85mm f/1.4 ART DG HSM Lens (for Nikon)
Perfection begins with a passion.
The Sigma 85mm f/1.4 ART DG HSM Lens is a latest addition to the world-renowned Sigma Global Vision Line. Designed and engineered for unparalleled image quality, the Sigma 85mm f/1.4 Art employs a completely new optical design and premium components. 2 FLD (performance equal to fluorite) glass elements and 1 element boasting a high rate of anomalous partial dispersion and high refraction achieve a class leading level of performance. The highly anticipated 85mm f/1.4 Art is an ideal lens for a variety of photographic subjects, particularly portrait photography, both in-studio and on-location.
The newly updated Hyper Sonic Motor (HSM) allows for 1.3X the torque of previous generations for fast and efficient autofocus. Through rigorous testing, the Sigma 85mm f/1.4 Art ushers in a new era of quality and performance for this popular fast prime focal length. A 9 blade rounded diaphragm creates beautiful background bokeh to isolate and accentuate the subject. Full time manual focus can be engaged by rotating the focusing ring, even when shooting continuous autofocus.
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 f/1.4 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 f/1.4 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 DSLRs offering 50-megapixel or higher resolution.
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.
Outstanding resolving power and minimized chromatic aberrations:
To create a top-performing 85mm f/1.4 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.
Image quality perfect for ultra-high-megapixel digital cameras:
Ultra-high-megapixel full-frame DSLRs 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. The Sigma 85mm f/1.4 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.
Sigma's fifth large-diameter f/1.4 lens for full-frame sensors:
Among its new product lines, this is the fifth large-diameter f/1.4 lens Sigma has introduced for cameras with full-frame sensors. Sigma is the only lens manufacturer that covers 20-85mm at f/1.4 brightness in its lineup. This latest lens reflects our experience with this specification and insistence on offering only the best.
The beautiful bokeh effect that only a large-diameter lens can offer:
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.
Exclusive low-dispersion glass:
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.
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. At the prototyping stage, Sigma used not only simulations but actual photographic experiments to assess flare and ghosting under multiple criteria, identify the causes of these issues under a wide range of situations, and take measures to mitigate them. In addition, Sigma's Super Multi-Layer Coating helps further reduce flare and ghosting and provide sharp, high-contrast images even in backlit conditions.
|Without Super Multi-Layer Coating
||With Super Multi-Layer Coating
High-precision, rugged brass bayonet mount:
The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.
Newly designed HSM for nimble AF control:
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 user can quickly find the perfect focus without needing to touch the focus mode switch.
Mount with dust- and splash-proof construction:
The lens mount incorporates rubber sealing to protect the mount from dust and water drops. The front and rear lenses feature a water- and oil-repellent coating that is particularly useful when shooting in a drizzle, near ocean spray, and in a wide variety of other conditions.
Nikon electromagnetic diaphragm mechanism included:
The lens for the Nikon camera includes the electromagnetic diaphragm mechanism and is able to receive the appropriate signals from the camera body. This feature ensures precision diaphragm control and stable Auto Exposure (AE) performance during continuous shooting.
The 9-blade rounded diaphragm creates an attractive blur in the out-of-focus areas of the image.
Evaluation with Sigma's own MTF measuring system (A1):
Sigma used to measure lens performance with a Modulation Transfer Function (MTF) measuring system using conventional sensors. However, Sigma has developed a proprietary MTF measuring system (A1) using 46-megapixel Foveon direct image sensors. Even previously undetectable high-frequency details are now within the scope of quality control inspections. All Sigma 85mm f/1.4 ART DG HSM lenses are checked using this A1 system before they are shipped.
Ultra-high precision and quality -- all made in Japan:
With only a few minor exceptions, all of Sigma's manufacturing, including molds and parts, takes place under a single integrated production system in Japan. Sigma is now one of the very few manufacturers whose products are truly made in Japan. Sigma's sophisticated products have satisfied professionals and lovers of photography all over the world because the manufacturing is based on genuine craftsmanship, underpinned by the passion and pride of Sigma's experts.
Sigma USB DOCK for Sigma GLOBAL VISION lenses (optional):
With the optional Sigma USB DOCK, you can update your lens firmware and adjust the focus position and other settings. Simply connect the lens to the Sigma USB DOCK and the dock to a computer to use the dedicated Sigma Optimization Pro software and perform various types of customization and adjustment.
Continue using your favorite lens with a different camera body:
Leveraging unique know-how and resources, Sigma offers Mount Conversion Service, which will be available for the Sigma 85mm f/1.4 ART DG HSM and other Sigma interchangeable lenses. Sigma will convert the current lens mount internal components, allowing you to continue using your favorite Sigma lenses from the new product lines with a different camera body. Thanks to this service, you can use a favorite lens for many years to come, unrestricted by your original choice of camera system.