Sigma 18-125mm f/3.5-5.6 AF DC OS HSM Lens

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The Ideal Lens For Several Types of Photography

Sigma 18-125mm OS HSM LensDigital Camera LensThe Sigma 18-125mm F3.8-5.6 DC OS HSM is a high ratio zoom lens which is designed exclusively for digital SLR cameras

DC lenses special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus! including compact and lightweight construction. These lenses will not give a full image on 'full frame' cameras.

This compact high zoom ratio lens incorporates Sigma's original OS (Optical Stabilizer) function. This system uses two sensors inside the lens to detect vertical and horizontal movement of the camera and works by moving an optical image stabilizing lens group to effectively compensate for camera shake. It offers the use of shutter speeds approximately 4 stops slower.

It is the ideal lens for several types of photography such as wide-angle, telephoto and close-up. SLD (Special Low Dispersion) glass, a molded glass aspherical lens and two hybrid aspherical lenses provide excellent correction for all types of aberrations. The super multi-layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range.

This lens has a minimum focusing distance of 35cm (13.8") at all focal lengths, and has maximum magnification of 1:3.8, making it ideal for close-up photography. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed autofocus.

HSM means this lens will autofocus on Nikon D40/D40x, Nikon D60, Nikon D3000, Nikon D3100 and the Nikon D5000 DX Cameras


High zoom ratio lens designed exclusively for digital SLR cameras and incorporating Sigma's original OS (Optical Stabilizer) function.

SLD glass and Aspherical lenses provide high image quality throughout the entirezoom range.

Super multi-layer coating reduces flare and ghosting.

Compact construction of 88.5mm (3.5") in length and 74mm (2.9") in diameter.

Minimum focusing distance of 35cm/13.8 inches and maximum magnification of 1:3.8, making it ideal for close-up photography.

HSM ensures quiet and high-speed autofocus.

Shop for the Sigma 18-125mm f3.8-5.6 DC OS HSM Lens here from these stores
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Lens styleZoom lens
Max Format Size APS-C / DX  
Lens focal length18 125 mm  
Stabilization type Yes (4 stops claimed)  
Camera mount Canon EF, Sigma SA, Nikon F (DX)  
Angle of view 69.3 - 11.4 degrees  
Aperture (lens diaphragm)
Largest aperture opening F3.8 - F5.6  
Smallest aperture opening F22.0 - F36.0  
Includes aperture ring No  
Total diaphragm blades 7  
Total Elements 16  
Number of Groups 12  
Coatings / special elements 2 SLD (Special Low Dispersion) glass elements 1 molded glass aspherical element 2 hybrid aspherical elements  
Minimum focus distance 0.35 m (13.78")  
Maximum magnification ratio 0.26 x  
Autofocus type Yes  
Full time manual focus No  
Focusing method Internal  
Lens distance scale Yes  
Depth of field scale No  
Focus distance limiter no  
Physical features
Overall weight490 g (1.08 lb)  
Lens diameter 74 mm (2.91")  
Overall length 89 mm (3.48")  
Construction materials metal mount  
Sealing No  
Zoom lock switch Yes  
Filter thread size 67 mm  
Filter annotations Does not rotate on focusing  
Lens hood included Yes  
Tripod collar included No

Lens Includes
Lens Hood

Front & Rear Lens Caps

1 Year International Warranty plus 2 Year Sigma U.S.A. Extended Warranty (Total Warranty is 3 Years from Date of Purchase)

Sigma Back Lens Cap Sigma Front Lens Cap


I guess I got a good one.., June 4, 2009

By J. Carr "KC guy" (Kansas City)

There were several mixed reviews on this product but I went ahead and purchased it anyway. I was replasing a Canon 18-55 IS "kit" lense that I dropped. (which is a great lense. Don't be confused by the reviews of the older model 18-55 that's not an IS. The IS version is a fantastic starter lens.) I got my lens from 47th St. and received it today. I've taken 74 pictures so far and just now viewed them on my computer. Awesome! I love the color and crispness of them. I'm not even close to a professional photographer. I use my XSI to take pictures of my 16 month old son and that's it so take my recommendation for what it's worth. It seems to me though that if you get a good "copy" you will be extremely pleased. My thought was if I wasn't happy with the quality I would just keep returning them until I got a good one. Maybe I'm just lucky but I got a great copy the first time around.

A Good Walk-around Lens, August 8, 2008

By G. Huang "Panabiker" (NJ, United States)

This is a new lens from Sigma. I could not find any detailed reviews on the net before I bought it. It's a well built amateur lens with a nice focal length coverage that's not available from Canon. It's significantly heavier than Canon's 18-55mm plastic kit lens, likely due to more metal and glass used in construction. The focus is reasonably fast compared to Canon's kit lens and slightly quieter. For those who are familiar with Canon's ring type USM lenses, however, the this HSM lens is not a ring type HSM. This means it's not as quiet or as fast as the true ring-USM. And it does not allow "full-time manual focus". You have to turn AF switch off to manually focus the lens. This was a little disappointment for me for a lens at its price range. Sigma could have used a ring type HSM. Another thing I noticed is that while the OS (optical stabilizer) can be switched on or off, the OS gyroscope seems to be powered on even when the OS is off. You can hear the little noise from the piezoelectric gyro. My concern is that it can still drain battery power when OS is off. Optically, I am not in a position to say much because I have a 8MP camera. It's certainly adequate for me. Overall, I am happy with it and sold the kit lens that came with my camera.

Press Release
Friday, 21 May 2004
Sigma Corporation is pleased to announce the launch of the new 18-125mm F3.5-5.6 DC.

This zoom lens was exclusively designed for use with digital SLRs with the popular APS-C sensor. This latest lens from Sigma`s DC range has a 6.9 times magnification zoom ratio. The image circle is designed to match the size of the image sensor of digital SLR cameras resulting in a surprisingly compact and lightweight superzoom lens.

A Special Low Dispersion (SLD) lens and two aspherical glass elements produce a high level of optical performance through the entire zoom range.

This lens has a minimum focusing distance of 50cm (19.6") at all focal lengths and is equipped with an inner focusing system. The non - rotating front element makes the lens particularly suitable for using the petal-shaped lens hood (supplied) and circular polarizing filters. The lens is equipped with a zoom lock which eliminates "Zoom Creep".

* Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.

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