This high zoom ratio lens is exclusively designed for digital SLR cameras and capable of covering a wide range of focal lengths from wide-angle to telephoto. Two Special Low Dispersion (SLD) glass elements and two hybrid aspherical lenses offer the utmost correction for all types of aberrations, and enables this extended range super zoom lens to be housed in a compact and lightweight construction of 70 millimeter (2.8 inches) diameter, and 78.1 millimeters (3.1 inches) in length, and weighing just 405 grams / 14.3 ounces. The new lens coating reduces flare and ghost, which is a common problem of digital cameras and also creates an optimum color balance. This lens has a minimum focusing distance of 45 centimeters (17.7 inches) at all focal lengths and has maximum magnification of 1:4.4.

The lens design incorporates an inner focusing system, which prevents the front of the lens from rotating, making it particularly suitable for using circular polarizing filters and petal shaped lens hoods. The overall length of the lens does not change during focusing, ensuring convenient handling and ease of use. A zoom lock switch eliminates ‘zoom creep’ during transportation, a convenient addition when traveling.

Canon’s new EOS 50D bridges the gap between the novice and the seasoned pro with a perfect combination of high-speed and quality. It features an APS-C sized 15.1-megapixel CMOS sensor for tremendous images, new DIGIC 4 Image Processor for fine detail and superior color reproduction, and improved ISO capabilities up to 12800 for uncompromised shooting even in the dimmest situations. It features a refined 3.0-inch Clear View LCD (920,000 dots) monitor, supercharged Live View Function with Face Detection Live mode, plus a number of new automatic Image Correction settings and HDMI output for viewing images on an HDTV.
The Sigma 18-200mm f/3.5-6.3 DC OS Lens offers an “all-in-one” super-zoom lens solution, from wide-angle to long telephoto. Equivalent focal range is approx. 27-300mm when used with a Nikon digital SLR camera. Updated with the OS (Optical Stabilizer) system, which minimizes image blur caused by camera shake, and offers the equivalent of shooting at a shutter speed 2-3 stops faster. This allows handheld telephoto zoom shooting even in poorly lit conditions. The 18-200mm’s optical design incorporates aspherical lenses and SLD (Special Low Dispersion) glass, which provides the utmost correction for all types of aberrations. DC lenses are exclusively designed for digital SLR cameras. The image circle (rear of lens) is sized to match the smaller dimensions used for the image sensor on digital cameras.
++PLUS++ 8GB Deluxe Accessory Kit: Loaded with extremely useful accessories.

Kit includes:
1) Canon EOS 50D SLR Digital Camera Kit
2) Canon EF-S 18-200mm f/3.5-5.6 IS Autofocus Lens for Select Digital SLR Cameras
3) Canon Zoom Pack 1000 Holster-style Bag
4) Transcend 8 GB 133x CompactFlash Memory Card
5) Professional 5-Piece Lens & Digital SLR Camera Cleaning Kit
6) 72mm Ultraviolet UV Filter
7) Professional Digital SLR Camera Air Blower
Digital Screen Care Kit for Digital Cameras