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Gentec introduces the Sigma 70-300mm F4-5.6 DG OS telephoto zoom lens with optical stabilizer

Monday September 23, 2009

Gentec International is pleased to announce the new Sigma 70-300mm F4-5.6 DG OS compact telephoto zoom lens featuring Sigma’s original optical stabilizer (OS) function.

The OS function allows the use of shutter speeds up to four stops slower than would otherwise be possible. It makes telephoto shooting easy for many types of photography, such as sports and nature. For Sony and Pentax cameras, the built-in OS function of the lens can be used, even with camera models equipped with an anti-shake function. The result is that the camera shake compensation is visible in the view finder, allowing the photographer to easily check for accurate focus and ensure there is no subject movement.

The Special Low Dispersion (SLD) glass element provides excellent correction for all types of aberrations. Sigma’s Super Multi-Layer Coating reduces flare and ghosting and provides high contrast images throughout the focal range. The compact lens has an overall length of 126.5 mm, a maximum diameter of 76.5 mm, and weighs just 610 grams. This compact construction makes the lens ideal for travel and handheld telephoto photography. The rounded nine-blade diaphragm creates an attractive blur to the out of focus areas of the photograph. And with a minimum focusing distance of 150cm throughout the entire zoom range and a maximum magnification ratio of 1:3.9, the lens is ideal for close-up photography.

The suggested retail price of the Sigma 70-300mm F4-5.6 DG OS lens is $599.95.

About Sigma DG Lenses

DG lenses offer a choice to those looking for a lens that will match the larger image circle of a full-frame SLR camera but is equally suited to the optical requirements of a digital sensor. These lenses provide optimum correction of distortion and aberrations common to digital cameras. The advanced optical design eliminates flare and ghosting from the image sensor and improves colour balance. And the non-vignetting construction ensures consistent edge-to-edge brightness and sharpness.

About Gentec International

Gentec International is Canada’s leading consumer accessory products company supplying a complete range of photo, video, digital, sport optics, home theatre, electronics, wireless and mobile audio products to the Canadian retail marketplace. Gentec offers prominent brand names such as Optex, Sigma, Velbon, Gary Fong, Roots, iQ, SanDisk, Sunpak, Bushnell, Tasco, Zeiss, Remington Clothing, Planet Wireless, Energy, Sony, Electrohome, Prolink, Smarthome, Klipsch, Mirage, Jamo, and Stinger.


  • Focal Length: 70-300mm
  • Minimum Aperture: F22
  • Lens Construction: 16 Elements in 11 Groups
  • Angle of View: 34.3° – 8.2°
  • Number of Diaphragm Blades: 9
  • Minimum Focusing Distance: 150 cm / 59.1”
  • Maximum Magnification: 1:3.9
  • Filter Size: 62 mm
  • Lens Hood: Bayonet Hood
  • Dimensions: Diameter: 76.5 mm  / 3” x  Length: 126.5 mm / 5”
  • Weight: 610 g / 21.5 ounces
  • Mounts (AF): Canon, Nikon, Pentax, Sony, Sigma
  • Appearance and specifications are subject to change for improvement without notice.