Do a lot of outdoor activities and changing lens is a real pain. I bought this lens because in the midst of changing a lens I would often miss the shot. That's the real issue because getting the photo trumps the pixel perfect image quality. Sure spending $10000 on great lenses will get the quality.

Great all purpose lens

Not weatherproof

I do not have plans to complete a full Sigma 18-200mm f/3.5-6.3 DC OS Lens review. Hopefully the information and standard test result provided are helpful to you. Pictured below from left to right (ordered by extended size with lens hoods) are the: 1. Canon EF-S 18-55mm f/3.5-5.6 IS Kit Lens 2.

The Sigma 18-200mm F3.5-6.3 DC Macro OS HSM ($399) is, considering its zoom range, a fairly compact all-in-one lens that's available for Canon, Nikon, Pentax, Sigma, and Sony APS-C cameras . In full-frame terms, it covers a 27-300mm field of view.

Long 11.1x zoom range; Compact; Maximum 1:3 macro magnification; Optically stabilized; Compact; Available for most APS-C camera systems; Attractive price tag

Sharpness suffers at maximum aperture; Distortion throughout zoom range

Although Sigma released their first lens with a built-in Optical Stabilizer (OS) system in the spring of 2004, the company employed this technology in only one pro-grade lens, the 80-400mm f/4.5-5.6. That has changed with the introduction of a more compact/affordable (digital-only) 18-200mm OS zoom.

This is an upgrade to my previous Sigma 18 - 200 which I accidentally dropped. It is lighter than the last one. Of all lenses of this type I have tried, Sigma always come out top for me in terms of sharpness. It is a great lens for travel and goes well with my Canon EOS 700D.

Durable; Lightweight

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

Tried this instead of an canon lens and the images are the same

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

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;

The Sigma 18-200mm F3.5-6.3 DC Macro OS HSM ($399) is, considering its zoom range, a fairly compact all-in-one lens that's available for Canon, Nikon, Pentax, Sigma, and Sony APS-C cameras. In full-frame terms, it covers a 27-300mm field of view. It can't match the optical quality of a prime lens, or Sigma's much larger and shorter 18-35mm f/1.8 zoom, but images throughout the zoom range are very useable, and sharpen up nicely when the lens is stopped down. The 18-200mm measures just 3.4 by 2.8 inches (HD), which is quite compact when you consider its zoom range. It does extend when zooming, doubling its height at 200mm, and it's not that light at 15.2 ounces. The front element is static during zoom and focus, so using a polarizing filter is feasible; the lens has a 62mm filter thread. A reversible lens hood is included. There are two control switches on the lens barrel—one toggles image stabilization (unless it's paired with a Sony or Pentax camera; they have in-body stabiliz...

The Sigma 18-200mm F3.5-6.3 DC Macro OS HSM lens trades some optical quality for a compact design, low cost, and long zoom range.

Long 11.1x zoom range; Compact; Maximum 1:3 macro magnification; Optically stabilized; Compact; Available for most APS-C camera systems; Attractive price tag

Sharpness suffers at maximum aperture; Distortion throughout zoom range