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 the telephoto range. This system uses two sensors inside the lens to detect vertical and horizontal movement of the camera, and effectively compensates for camera shake by moving an optical image-stabilizing lens group. 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 Fully compatible with All Nikon Digital SLR cameras including the D40 and D40x Dimensions - Diameter 79mm x Length 100mm Weight - 21.5 ounces (610 grams)
The Sigma 18-200mm high-zoom-ratio lens is designed exclusively for Nikon 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.

Technical Details

-18mm to 200mm high-zoom-ratio lens designed exclusively for Nikon digital SLR cameras
-2 SLD glass elements and 2 hybrid aspherical lenses correct for all types of aberrations
-Minimum focusing distance of 45cm at all focal lengths; maximum magnification of 1:4.4
-Lens coating reduces and flare and ghost; zoom lock switch eliminates "zoom creep"
-Measures 70mm in diameter and 78.1mm long; weighs 14.3 ounces; 1-year warranty
See more technical details

 "pictures are not consistent" 2010-07-24
By U. Patel
i have been using this lens for a little while and its mix reaction let me make clear i am not a pro or advance photographer but average Joe i am speaking in plain language it takes a beautiful pictures and not so beautiful pictures i am taking about sharpness some pictures are very sharp and great looking and some feel like they are out focus or fuzzy just a little bit i was planing to use this lens at wedding of my cousin thats why i bought this lens but i think i am going to use Nikon 18-55 just to be safe and use this only if i need it on camera LCD Display it looks fine but when you see in computer thats when you see very clearly and this is not an issue all the time but its their i just take lots of pictures so in case pictures that you want is not so clear you have many choices to chose from would i recommend this lens that depends on your budget if you can't spend lots of money on lens like me and you have budget of 350 to 375 this is a very good lens Nikon 18-200 is 950 and this is around 360 which is little more then 1/3 the price but its not 1/3 the quality i don't have Nikon 18-200 but i have seen picture posted by users on amazon and they look very good this lens takes very good pictures most of time it some pictures i am not happy with focus wise they feel soft then again Nikon lens user may get those pictures but they are not going to post them on amazon but you have to have 18-200 lens and don't have money to buy Nikon or canon i would definitely recommend this lens


 "A good lens..." 2010-07-21
By Celt64
A fine lens. I have used this lens on both a Nikon D3000 and D90 with good results.


 "Does not work on a canon 5D MarkII" 2010-07-14
By sophia6225
Always make sure the Lens will fit your camera. This one did not and the buyer did not note this when advertising its use for Canon digital Cameras.


 "SigmaAF 18-200 with opitical stablizer" 2010-07-01
By Larry
Great lens for the money.Outperforms my Nikon 55-200 in the areas of sharpness and contrast. The stablizer works great.


 "Good value for my general purposes" 2010-06-25
By Capt. Video (Colorado)
Added to my new Rebel T2i for general, non pro, picture taking. 18 to 200 very nice range. Zoom stiffens a little mid range but seems to be smoothing out with use. For the $$$ a no brainer and due to my inexperience with dslr (my pro gear all video) any lens shortcomings vs a more expensive version, do not bother me.


Read more Sigma AF 18-200mm f/3.5-6.3 DC OS (Optical Stabilizer) Zoom Lens for Nikon Digital SLR Cameras

Tiffen 72mm UV Protection Filter
Zeikos ZE-UV72 72mm Multi-Coated UV Filter
Zeikos ZE-FLK72 72mm Multi-Coated 3 Piece Filter Kit (UV-CPL-FLD)
Nikon D5000 12.3 MP DX Digital SLR Camera with 2.7-inch Vari-angle LCD (Body Only)
Nikon D90 12.3MP Digital SLR Camera (Body Only)