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Sigma AF 18-200mm f/3.5-6.3 DC OS (Optical Stabilizer) Zoom Lens for Canon Digital SLR Cameras | 
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| Brand: Sigma
Category: Photography
List Price: $439.99
Buy New: $349.95
You Save: $90.04 (20%)
New (11) Used (2)
Avg. Customer Rating:  60 reviews
Media: Electronics
Autographed: No
Memorabilia: No
Fragile: No
Batteries Included: No
Maximum Focal Length: 200
Minimum Focal Length: 18
Shipping Weight (lbs): 1.3
Dimensions (in): 3.9 x 3.1 x 3.1
MPN: B000NOSCGM
Model: B000NOSCGM
UPC: 085126888541
EAN: 0085126888541
ASIN: B000NOSCGM
Release Date: June 20, 2007
Availability: Usually ships in 1-2 business days
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| Features:
| • | 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 |
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| Editorial Reviews:
Amazon.com Product Description
The Sigma 18-200mm high-zoom-ratio lens is designed exclusively for Canon digital SLR cameras and is 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 correct for all types of aberrations, letting Sigma house the extended-range super-zoom lens in a compact and lightweight body that measures 70mm in diameter and 78.1mm long and weighs a mere 14.3 ounces. The new lens coating, meanwhile, reduces flare and ghost--a common problem shared by many digital cameras--while also creating an optimum color balance. Other details include a minimum focusing distance of 45cm (17.7) at all focal lengths, a high zoom ratio of 11:1, and a maximum magnification of 1:4.4. The lens design incorporates an inner focusing system that prevents the front of the lens from rotating, making it particularly suitable for using circular polarizing filters and petal-shaped lens hoods. In addition, the overall length of the lens never changes during focusing, making the lens convenient to handle and easy to use. Finally, the lens's zoom lock switch eliminates "zoom creep" during transport--a convenient addition when traveling. The lens, which includes a metal mount, is backed by a one-year warranty.
Product Description
The Sigma 18-200 F3.5-6.3 DC OS HSM Lens incorporates an Optical Stabilizer function and is exclusively designed for digital SLR cameras. It is perfectly suitable for low light conditions whether indoors, at dusk, or in telephoto range. This system uses two sensors inside the lens to detect vertical and horizontal movement of the camera by moving an optical image stabilizing lens group, to effectively compensate for camera shake. It also automatically detects panning movement of the camera and compensates for camera shake when shooting moving subjects such as motor sports. SLD (Special Low Dispersion) glass and aspherical glass provide excellent correction for all types of aberrations. This lens has a minimum focusing distance of 45cm (17.7") throughout the entire zoom range and has a maximum magnification of 1:3.9. Since the inner focusing system means the front of the lens does not rotate, optional circular polarizing filters and the supplied petal-type hood can easily be used. A magnification scale is displayed on the lens barrel, ensuring ease of use. A zoom-lock switch mechanism is provided to prevent the lens from creeping due 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 Magnification Petal Lens Hood Dimensions - Diameter 79mm x Length 100mm Weight - 21.5 ounces (610 grams)
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| Customer Reviews: Read 55 more reviews...
 Half the price but half the qaulity November 29, 2008
1 out of 1 found this review helpful
This is the second Sigma Lens I've owned and the second one I've returned. Common to many Sigma lenses is zoom creep, inaccurate focus, and heaviness. The reason I give it 3 stars?? If you use your DSLR more for snapshots and need a huge zoom range this lens is a good alternative to carrying two lenses or spending $600 on the Canon equivilant. If you want your pictures to be in focus and have a lighter lens, smoother focus ring and have some extra money in your budget, go with a Canon lens
 Sigma AF 18-200mm f/3.5-6.3 DC OS Zoom Lens for Nikon D40 November 22, 2008
I have used this lens with my D40 for about a month. I was concerned about the relative slowness of the lens, especially at full zoom, but the OS makes up for it allowing me to shoot successfully at slower shutter speeds. Optically the lens seems fine to me. It DOES autofocus with the D40. Combined with a Sigma 30mm HSM prime lens, I have everything I need for most situations. This lens is significantly larger and heavier than the Nikon kit lenses. You will know that you have this 1-lb lens hanging around your neck! I am very satisfied with this lens. Recommended to replace both the 18-55 and 55-200 Nikon kit lenses.
Comparing the Sigma to the New Canon 18-200mm IS Lens November 13, 2008
4 out of 4 found this review helpful
I've had the Sigma 18-200mm OS lens for several months and found it to give sharper images with my 40D than the Tamron 18-250mm (non-IS/OS) which it replaced. Then along comes the new Canon EF-S 18-200mm f/3.5-5.6 IS, their own superzoom "travel lens." I bought one to see how it compares to the Sigma. My tests show mixed results regarding image quality. With both lenses wide open the Sigma wins at the wide end from 18-24mm, especially away from the center, while the Canon wins at the 135-200mm long end, also especially away from the center. The Sigma is f6.3 wide open at 200mm while the Canon is f5.6. This is only a small difference, but it does give the Canon even more advantage at 200mm where shutter speed needs to be the highest.
Both lenses auto-focus accurately (no front or back focus) although the Sigma is slower to lock focus in low light and is a little noisier in getting there. Their IS/OS are equally effective at about 3 stops of compensation. Build quality, size and weight are about the same and both use the same 72mm filter size. Sigma includes a lens hood while Canon wants to sell you one.
In summary, the Canon is slightly better for me due to the faster and quieter low-light focus and improved telephoto image quality. The trade-off is poorer image quality than the Sigma for wide angle shots, even after stopping down. Finally, the Sigma lens costs about $200 less than the Canon at this time.
great daytime walk around lens November 12, 2008
1 out of 1 found this review helpful
I bought this lens when i bought my Canon XSi back in May. Its a great "walk around" lens. it covers a huge spectrum of range. For daylight photography and with a flash it works very well. My only real complaint is that its heavy and a little big... but this is expected with the 18 to 200 range.
IS works very well. At the 150 to 200mm range there is a noticeable difference between IS turned on and Off.
pared with the canon 50mm f 1.4 i think i have all the glass i'll need for a while. now its just a matter of learning how to use it well.
 Awesome Lens November 12, 2008
1 out of 1 found this review helpful
Lens is great. Can hand hold 200mm focal length at 1/30th sec shutter speed(without camera blur),when using the optical stabilizer. Would higly reccomend this lens. Rarely comes off my camrea. With 18-200mm focal length and the OS it is pretty much the only lens you will ever need!!
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