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Sigma Art Wide-angle lens -AF 35mm F1.4 DG DG HSM Lens for Nikon

Item # E1SG35F14NKRB (Part # E1SG35F14NKRB)
Art Wide-angle lens -AF 35mm F1.4 DG DG HSM Lens for Nikon
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Item Description:
The Sigma 35mm 1.4 DG HSM is equipped with technology including a Hyper Sonic Motor (HSM), floating internal focusing system, SLD and FLD Glass elements. The large 1.4 aperture make it ideal in low light and the lens is compatible with the Sigma USB dock.
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The Sigma 35mm 1.4 DG HSM is a state of the art lens designed for full frame cameras but can also be used with APS-C sensors as well. The first addition to the Art category in Sigma?s Global Vision, the 35mm 1.4 DG HSM includes new features based around a unique lens concept and design. The 35mm is a staple focal length in the world of photography, and paired with Sigma technology, this lens can take artistic expression to the next level. The lens is equipped with technology including a Hyper Sonic Motor (HSM), floating internal focusing system, SLD and FLD Glass elements. The HSM ensures quiet, high speed, accurate autofocusing while the floating focusing system allows for superior optical performance with subjects at a closer shooting distance. The SLD glass elements along with the FLD glass elements, which are equal to fluorite, help correct both axial and chromatic aberration. The large 1.4 aperture make it ideal in low light and the lens is compatible with the Sigma USB dock and Optimization Pro software to adjust and fine tune focusing parameters. The Sigma 35mm 1.4 DG HSM is a must have for any camera bag.

Highlights:

A large-aperture wide-angle F1.4 lens with truly impressive image quality. A true flagship of artistic expression.
SIGMA has always leveraged the most advanced optical technologies to offer photographers the highest level of lens performance. Now, SIGMA is proud to offer the first lens in an all-new product line: the 35mm F1.4 DG HSM. This wide-angle F1.4 lens delivers the highest level of brightness and beautiful bokeh effects. It offers the unique characteristics that only a large-aperture F1.4 lens can offer: shallow depth of field along with superior low-light and hand-held performance.

The full realization of the Art product concept for you to hold in your own hands and appreciate with your own eyes.
Designed with a focus on sophisticated optical performance and tremendous expressive power, Sigma's new Art line of lenses delivers top-level image quality. With unsurpassed expressive performance, these lenses reach the high standards demanded by photographers with an artistic, creative inclination. Along with landscapes, portraits, still-life, close-up and casual snaps, they're perfect for the kind of photography that unleashes the inner artist. Ideal for studio photography, they offer just as much expressive scope when capturing architecture, starry skies, underwater shots and many other scenes. The full realization of the Art concept, the 35mm F1.4 DG HSM is the perfect flagship. Hold it in your own hands and appreciate it with your own eyes.

A masterpiece large-aperture wide-angle F1.4 lens
A large-aperture lens with minimal axial chromatic aberration and superb peripheral resolution.
Several types of optical aberration can affect the image quality of a lens. Chromatic aberration is among the most important, and minimizing it is essential. There are two types of chromatic aberration: transverse, which can be corrected for with digital processing; and axial, which is difficult to minimize after a shot is taken. In the 35mm F1.4 DG HSM, FLD ("F" Low Dispersion) glass, which is equivalent to fluorite in its characteristics, and SLD (Special Low Dispersion) glass help optimize the power distribution of the lens. This optimization minimizes axial chromatic aberration by causing the different wavelengths of light to strike the same focus position while also minimizing transverse chromatic aberration. In addition, aspheric lenses help minimize astigmatism and field curvature. Thanks to these features, resolution is extremely high from the center to the edges of the photograph.

Axial chromatic aberration
Axial chromatic aberration becomes a bigger issue with large-aperture lenses. As compared to conventional 35mm F1.4 lenses, this new lens is designed to produce images with extremely low chromatic aberration. As a result, it is possible to achieve a bokeh effect that is cleaner and more aesthetically pleasing than ever before.

Lens construction
Putting a large-aperture aspheric lens first in the series of lenses makes possible a slim barrel. A single FLD glass lens, which boasts the same performance as a fluorite lens, is combined with four SLD glass lenses to minimize chromatic aberration. And optimized power distribution helps correct various types of optical aberration. These features give this F1.4 large-aperture lens truly optimal image quality.

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.

High resolution with beautiful bokeh effects
Minimal distortion combined with beautiful bokeh effects at large-aperture settings.
The aspheric lens at the front of the lens series helps minimize both distortion and vignetting. The rounded diaphragm produces an attractive round bokeh effect at large-aperture settings. Optimized power distribution minimizes sagittal coma flare. Coma of point light sources near the edge of the image and axial chromatic aberration are both minimized, making the lens an excellent choice for photographing nighttime landscapes and heavenly bodies.

Rounded diaphragm
When photographing with point light sources such as electric lights or reflections on a body of water in the background, the rounded 9-blade diaphragm helps produce an attractive bokeh effect-even at large-aperture settings.

An all-new, all-premium lineup
Superior functionality across the lineup, thanks to SIGMA's proprietary new A1 MTF measuring system.
There are three requirements for outstanding lenses: fine design, precise manufacturing and inspection that ensures compliance with all specifications. SIGMA lenses are born of well-thought-out design concepts and sophisticated, advanced Japanese manufacturing technology; the final clincher is SIGMA's lens performance evaluation. SIGMA used to measure lens performance using conventional sensors. However, they've now developed their own A1 proprietary MTF (modulation transfer function) measuring system using 46-megapixel Foveon direct image sensors. Applying this system, they check each lens in the new lines at it's Aizu factory, their sole production site. Even previously undetectable high-frequency details are now within the scope of SIGMA quality control inspections, allowing them to deliver consistently high lens performance. SIGMA's MTF system has the capability to test lenses for full-size 20+ megapixel 35mm digital SLR cameras.

46-megapixel Foveon direct image sensor
The 46 effective megapixel (4,800 x 3,200 x 3 layers) and 44 recording megapixel (4,704 x 3,136 x 3 layers) 23.5 x 15.7mm APS-C X3 direct image sensor captures all primary RGB colors at each and every pixel location, ensuring the capture of full and complete color. Using three silicon-embedded layers of photo detectors, stacked vertically to take advantage of silicon's ability to absorb red, green and blue light at different respective depths, it efficiently reproduces color more accurately, and offers sharper resolution, pixel for pixel, than any conventional image sensor. Since color moire is not generated, the use of a low-pass filter is not required, meaning light and color, generated by the 46-megapixel APS-C X3 direct image sensor is captured with a three-dimensional feel.

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 likes to think their products are somehow imbued with the essence of their homeland, blessed as it is with clean air and water, and focused, hard-working people. Sigma prides themselves on the authentic quality of SIGMA products, born of a marriage between highly attuned expertise and intelligent, advanced technology. Their sophisticated products have satisfied professionals and lovers of photography all over the world because their manufacturing is based on genuine craftsmanship, underpinned by the passion and pride of their experts.

The finest in materials, usability and functionality.
A refined, integrated design made with the photographer in mind.
All lenses in SIGMA's new Art line come with a hood with a high-quality rubberized connector and feature a newly designed lens cap and AF/MF switch, and are designed for intuitive use and superior functionality. Inside, HSM (hypersonic motor) delivers high AF speed and extremely quiet performance. An enhanced algorithm offers even smoother automatic focusing. Full-time manual focus override is another key feature that leaves the artistic touches in the photographer's hands. The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens. In both the external and internal parts, the optimized use of TSC(Thermally Stable Composite), an excellent match for metal parts, further contributes to the high-precision construction of the lens.

HSM (hypersonic motor)
HSM (hypersonic motor) delivers high AF speed and extremely quiet performance.

TSC (Thermally Stable Composite)
A first for the industry, the barrel of the lens features a new TSC (Thermally Stable Composite) that offers minimal thermal shrinkage combined with exceptional hardness. It also offers 25% greater elasticity than polycarbonate. Since its thermal shrinkage is low, TSC matches well with metal parts, further contributing to the high-precision construction of the lens. TSC also makes possible slimmer forms for parts like zoom rings and scaling rings.

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.
 
Floating system
This system adjusts the distance between lens groups during focusing, thereby reducing the amount of lens movement required. The result is less aberration at different shooting distances. Benefits are particularly great in macro lenses because they cover a wide range of shooting distances, and in wide-angle lenses, which employ asymmetric configurations of lens elements.

Flare and ghosting reduction
From an early stage in the lens design process, flare and ghosting have been measured to establish an optical design resistant to strong incident light sources such as backlighting. SIGMA's Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions. The included lens hood can be attached to block out extraneous light, which can have a negative effect on rendering performance.
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SIGMA USB DOCK makes customization and flexible adjustment possible
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.

Available for Sigma's Mount Conversion Service that enables lenses to be long term assets (charges apply)
Continue using your favorite lens with a different camera body.

Over the years, SIGMA has manufactured an extremely wide variety of interchangeable lenses. Leveraging their unique know-how and resources, Sigma's new Mount Conversion Service, which will be available for the SIGMA 35mm F1.4 DG HSM| Art 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.
Note: SIGMA's mount conversion service differs from ordinary repairs and product support and is not offered at your local SIGMA dealer or camera store. To access this service, please communicate directly with SIGMA.

Product Specifications
Lens construction 13 elements in 11 groups
Minimum aperture F16
Filter size 67mm
Angle of view (35mm equivalent) 63.4 degrees
Minimum focusing distance 30cm / 11.8in
Dimensions (diameter x length) 77mm x 94.0mm / 3.0in x 3.7in
Number of diaphragm blades 9 (Rounded diaphragm)
Maximum magnification ratio 1:5.2
Weight 665g / 1.46 lb
Corresponding Mount Nikon HSM DG

* PENTAX SFX and SF7 cannot be used.
* Nikon and Pentax mounts do not have an aperture ring. Some functions may not work depending on the camera model.
*1 If the camera body does not support HSM, auto focus will not be available.
* The appearance, specifications, and the like of the product are subject to change for improvement without notice.

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