Sigma's versatile 18-200mm F/3.5-6.3 DC OS lens has been designed as an all-purpose lens for digital SLR cameras with 'APS-C size' image sensors. Offering an 11x zoom ratio and a minimum focusing distance of 45cm at all focal lengths, this lens will appeal to photographers who want a single,...

This is one of the cheapest lens in this category and is available in Canon, Nikon, Pentax, Sigma and Sony mounts...

Price; great chromatic aberration control

Inconsistent performance; low resolution at 200mm

This is one of the cheapest lens in this category, and it's available in Canon, Nikon, Pentax, Sigma and Sony mounts. It doesn't offer image stabilisation, and so is best suited to cameras with on-board IS.

Price; great chromatic aberration control

Inconsistent performance; low resolution at 200mm

Can anyone compare Canon EF 28-135 IS USM to Sigma 18-200 DC OS pls. Equivalent IS and sharpness

One of the limitations with a kit lens is that you don't have a great focal length range, especially at the telephoto end of the scale. This Sigma 18-200mm f/3.5-6.3 is not only small and light but also has an impressive optical stabiliser built-in (Canon and Nikon fits).

The Superzoom category of interchangeable lenses is becoming one of the most hotly contested areas of technology in the digital age and virtually everyone is trying to get in on the act. The Sigma 18-200mm is the latest to reach the dealers' showcases.

Good stabilisation system; Good build quality; Decent optical performance for type; Reasonably price

The negative points are; Heavier than some; Some CA around the edges at wider apertures; Barrel distortion at the wide end

Sigma's long-awaited, second Optical Stabilizer (OS) lens ($549, street) is an 11.1X digital-only superzoom with one SLD and three aspheric elements. A 29-320mm equivalent, it follows Sigma's first OS lens, an 80-400mm f/4.5-5.6 ($999, street), by more than four years, and outdoes its predecessor...

Huge 11x focal length range, ideal general purpose and travel lens ; Relatively low chromatic aberration; Low distortion (for a superzoom); Reasonably effective optical stabilization system, 2.5 - 3 stops benefit;

Very inconsistent sharpness through the zoom range - extremely soft at 80mm; Soft corners at all focal lengths; Occasionally indecisive autofocus; Slightly less resistant to flare than its more recent competitors;

Epinions doesn't allow embedded photos, which is a shame for camera/lens reviews where the photo is

Small, compact; Good optics for such a wide range

Soft corners at 18mm wide open; Canon version must be focused parfocally above 135mm

I bought this lens after a massive amount of research, I wanted to find a lens that compromised of two possible lens into one big lens so it would be easier to carry around. I also was feeling very limited by the current lens I had which was Canon 18-55mm basic kit lens.

Cheap; good build; good quality photos; large focal range; no front element rotation

A bit soft at 200mm