Sigma 120-300mm f2.8 DG OS HSM Lens – Canon Fit

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The Sigma 120-300mm f2.8 DG OS HSM Lens Canon Fit is a telephoto zoom lens that joins Sigma's Global Vision Sports line of customisable and fast aperture lenses. This dust- and splash-proof lens is designed to enhance usability and deliver superior optical performance, even in the most challenging situations. Using the Sigma USB Dock (not included, available separately) users can fine-tune and personalise certain functions of the lens to fit their shooting style, such as the focus limiter, autofocus speed and update the lens' firmware. The HSM (Hyper Sonic Motor) delivers high AF and extremely quiet performance, while full time manual focus override leaves the professional touches in the photographer's hands. The OS (Optical Stabiliser) makes it possible to use shutter speeds approx. 4 stops slower than would otherwise be possible and enables hand held photography. This DG lens is designed for Canon DSLRs with a full-frame sensor, but other Canon cameras with an APS-C cropped sensor will also work.

The Key Features

  • Designed for use with Canon's EF mount full-frame DLSRs
  • High-performance telephoto zoom lens
  • Joins Sigma's Global Vision Sports line
  • Ideal for wildlife, sports, aviation, portraits, and more
  • Fast constant f2.8 maximum aperture
  • Hyper-sonic AF motor (HSM)
  • Optical Stabilisation (OS)
  • Dust and splash proof construction
  • Compatible with Sigma USB Dock (not included)

A professional 300mm F2.8 telephoto with powerful zoom capability, this lens allows complete customization, so you can tackle tough situations with ease.
Offering excellent image expression and a low F-number, the large-aperture 300mm F2.8 lens is a favorite piece of equipment among professional photographers. With the idea of taking this spec to the next level with powerful zoom capability, Sigma developed the 120-300mm F2.8 zoom lens. It is difficult to compose shots with traditional 300mm lenses. In the case of sporting events, performances on stage and other situations in which it is difficult to change your position, you often lose the desired shot in the process of changing lenses. A large-aperture 120-300mm F2.8 zoom lens, however, eliminates the need for most lens changes, allowing the photographer to adjust zoom and easily achieve the desired framing. Even in the most difficult of situations, this lens truly empowers photographic expression

Enhanced usability in every way
This lens features durability that stands up to challenging photographic situations and hard use demands along with the intuitive and enjoyable usability that photographers need. Since the lens uses Sigma's inner focus and inner zoom technologies, adjusting the focus and zoom rings does not change the length of the lens, resulting in excellent hold for the selected ring positions. Since the front of the lens does not move, the lens is compatible with a circular polarizer. In every way, Sigma has designed the lens for exceptional usability. The zoom ring is textured to allow fingers to find the correct position easily. Designed for seamless integration with the rest of the lens, the four control switches feature carefully placed lettering and buttons and specially shaped screws. The lens hood has also been completely redesigned, even down to the screws that connect it to the lens, and the newly designed tripod collar provides for connection to a camera strap.

A powerful tool for handheld photography of distant subjects Optical Stabilizer
This lens features Sigma's proprietary OS (Optical Stabilizer) featuring correction of approximately four stops. Thanks to this technology, the lens is a powerful ally to photographers shooting distant subjects without a tripod. Two OS modes are available: Mode 1 for regular photography, and Mode 2 for use in shooting motorsports and other situations in which subjects are moving quickly. By connecting the lens to the separately sold USB dock, users may adjust OS function in detail

TSC (Thermally Stable Composite)
Conventionally it is considered essential to leverage the qualities of metal and polycarbonate in camera and lens layout design. A first for the industry, the barrel of the new series of Sigma lenses 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.

Designed for exceptional resistance to dust and water
This lens is ready for all the tough situations that pros encounter. The mount connection area, manual focus ring, customization switch and other controls, switch panels and cover connection areas are all designed to be dust and water-resistant. The zoom and focus rings are also designed for exceptional usability in real-world circumstances.

Rivaling a fixed focal length lens in image quality
Offering excellent image expression and a low F-number, the large-aperture 300 mm F2.8 lens is a favorite piece of equipment among professional photographers. While taking this spec to the next level with powerful zoom capability, Sigma has also used two lens elements made of fluorite-equivalent FLD (“F” Low Dispersion) glass and one element made of SLD (Special Low Dispersion) glass, which help minimize chromatic aberration and provide image quality that rivals that of a fixed-focus lens.

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.

Sigma DG
Sigma's DG lenses are designed for cameras with a full-frame sensor, but cameras with a cropped sensor can also take these lenses. These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.

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Product Specification

Aperture Blades 9
Autofocus Motor HSM
Colour Black
Enlargement Ratio 1:8.1
Filter Thread Size (mm) 105
Focal Length – Tele (mm) 300
Focal Length – Wide (mm) 120
Focal Mechanism Internal Focusing
Hood Model LH1220-01
Included Accessories Lens hood, Front cap, Rear cap LCR II, Tripod socket TS-51
Lens Mount Canon EF
Lens Type Telephoto Zoom
Manual Focus Switching Yes
Maximum Aperture – Tele 2.8
Maximum Aperture – Wide 2.8
Minimum Aperture 22
Number of Lens Elements 23
Number of Lens Groups 18
Sensor Format Full Frame
Size (mm) 111.4 x 289 mm
Teleconverter Compatibility 1.4x & 2x
Weight (g) 3390
MF switch Yes
Minimum Focus Distance (m) 1.5
Manufacturer Link Sigma
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Product Code: 1534896-wex Manufacturers Part Number: 137954 Got a question? Get it answered...