Sigma 18-200mm f/3.5-6.3 DC OS HSM review
The Sigma 18-200mm f/3.5-6.3 DC OS HSM is the latest in the company's long line of superzooms, which stretches back to the early 1990s and a series of 28-200mm (and later 28-300mm) lenses for 35mm SLRs. In fact Sigma was the first company to produce a superzoom for the burgeoning budget DSLR market, with its 18-125mm D3.5-5.6 DC of August 2004, followed shortly after by an 18-200mm F3.5-6.3 DC in February 2005. However the big problem with long, slow zooms is image blur due to camera shake, and in March 2007 Sigma duly announced this new version of the 18-200mm with the addition of 'Optical Stabilization' (OS) technology for Canon, Nikon and its own SD range of DSLRs (Sony and Pentax users, of course, benefit from sensor-shift image stabilization of all lenses). In somewhat curious fashion, the Nikon mount version also sports an ultrasonic-type 'HyperSonic Motor' (giving rise to the HSM tag,) while the Canon and Sigma mount models use a conventional micro-motor for focusing.
Like all superzooms the Sigma 18-200mm OS features a complex optical design, in this case 18 elements in 13 groups including one Super-Low Dispersion (SLD) glass element, and no fewer than three aspherical elements to combat aberrations. A minimum focus distance of 0.45m through the entire range adds to the lens's all-round versatility. The optical stabilization system detects when the camera is panning and automatically switches to operating in one axis only, useful for shooting moving subjects such as sports.
This lens competes directly in the 'stabilized superzoom' market with the Nikon 18-200mm F3.5-5.6G AF-S VR DX, Canon EF-S 18-200mm F3.5-5.6 IS, and Tamron 18-270mm F3.5-6.3 Di-II VC, all of which which we've reviewed over the past year. Its main advantage at the moment is that it is considerably cheaper than any of these other lenses, making it much the most affordable option for users looking to supplement their collection with a general-purpose travel lens. But in this case, does cheaper also mean inferior, or has Sigma delivered quality on a budget?
- 27-300mm equivalent focal length range; F3.5-6.3 maximum aperture
- Optical Stabilization (OS) system
- Available for Canon, Nikon and Sigma mounts (APS-C/DX format DSLRs only)
- Hypersonic Motor (HSM) focusing on Nikon mount only
Angle of view
The pictures below illustrate the focal length range from wide to telephoto (on Nikon DX format, 1.5x).
|18mm (27mm equivalent)||200mm (300mm equivalent)|
Sigma 18-200mm f/3.5-6.3 DC OS HSM specifications
|Street price||• $400 (US)
• £280 (UK)
|Date introduced||March 2007|
|Maximum format size||APS-C/DX|
|35mm equivalent focal length
||• 27-300mm (1.5x DX)
• 29-320mm (1.6x APS-C)
• 31-340mm (1.7x Foveon APS-C)
|Diagonal Angle of view (APS-C)||74º - 8º|
|Lens Construction||• 18 elements / 13 groups
• 1 SLD glass element
• 3 aspherical elements
|Number of diaphragm blades||7, rounded|
|AF motor type||• Micro-type Hypersonic Motor (Nikon mount)
• DC Micro Motor (Canon & Sigma mounts)
|Image stabilization||• Yes
• Automatic panning detection
|Filter thread||• 72mm
• Does not rotate on focus
|Supplied accessories*|| Front and rear caps
|Weight||600 g (21.2 oz)|
|Dimensions||79 mm diameter x 98 mm length
(3.1 x 3.9 in)
|Lens Mount||Canon, Nikon, Sigma|
* Supplied accessories may differ in each country or area
|Hot Air Balloons Over Bagan by User9320321874|
|Blue mood by darub|
from Fixed lens shootout.
|Yellow Warbler by LeeS|
from A Big Year - birds
|Waiting for the Parade by tcoker1103|
from - La Vida Loca - (Black and White Street Photography+ A Border)
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