Sigma Af-18-200mm f/3.5 DC OS (Optical Stabilizer)

Posted In : Cameras, Accessories
(added 08 Apr 2009)

Sigma’s landmark development - the most modern series--Sigma 18-200mm high-zoom-ratio lens is fully having the power of covering a broader range of focal lengths, from broader-angle to telephoto. Two Special Low Dispersion (SLD) glass factors and two fusion aspherical lenses right for all modes of abnormalities, providing the opportunity to Sigma house, the extended-range super-zoom lens in a highly compact and lightweight body that measures 70mm in diameter and 78.1mm and weighs merely 14.3 ounces.

The latest lens coating, meanwhile, decreases flare and ghost - a common issue seen in digital cameras, thereby, creating the best colour balance.  Rest of the trivia, consists on a minimum focusing distance of 45cm (17.7) at all focal lengths, a high zoom ratio of 11:1, and a maximum enlargement of 1:4.4.

The lens framework involves an inner focusing system that restricts the front of the lens from moving, making it particularly appropriate for using circular polarizing filters and petal-shaped lens covers.  Moreover, the overall length of the lens never swaps during focusing, enabling the lens befitting to handle and easy to operate.

Conclusively, the len’s zoom lock switch removes “zoom creep” during transport—a highly befitting addition, during the travelling.  The lens, which involves a metal mount, is supported by one year warranty.

Product Description

The Sigma 18-200 lens an optical stabilizer function and is primarily structured for digital CLR cameras.  It is highly befitting for low light environs, like indoors, during the dusk, or in telephoto range.  This mechanism uses two sensors within the lens to sense vertical and horizontal movement of the camera by moving an optical image stabilizing lens group, to efficiently recompense for camera shake.  It also automatically senses panning movement of the camera and recompenses for camera shake, while shooting moving objects, such as motor sports.

A zoom-lock switch mechanism is offered to restrict the lens from changing its position, owing to its own weight 69.3 – 7.1 degrees (Sigma SD format) angle of view 7 Diaphragm Blades F22 Minimum Aperture 45cm/17.7 Minimum Focusing Distance 1-3.9 Maximum Enlargement Petal Lens Cover Dimensions – Diameter 79mm x length 100mm Weight – 21.5 ounces (610 grams).

Technical Details
  • 18-200mm high-zoom-ratio lens designed for Canon digital SLR cameras
  • 2 Special Low Dispersion (SLD) glass elements and 2 hybrid aspherical lenses
  • Lens coating reduces flare and ghost; 17.7-inch close focusing distance
  • Inner focusing system is suitable for circular polarizing filters and lens hoods
  • Measures 2.75 inches in diameter and 3.07 inches long; 1-year warranty
Product Details
  • Product Dimensions: 3.9 x 3.1 x 3.1 inches; 1.3 pounds
  • Shipping Weight: 2 pounds
  • Shipping: Currently, item can be shipped only within the U.S.
  • Item model number: B000NOSCGM
(added 08 Apr 2009) / 3958 views

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