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#17
Old 07-13-2013, 08:05 PM
lastnoob lastnoob is offline
L2: Beginner
  • Dec 2012
  • 37
  • 18 lastnoob is finding his bearings
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Quote from mz1974 View Post :
How is it compared with Canon 18-200mm?
I own both, I would say sigma is much better in terms of weight and size and slightly better in edge sharpness. However, the Canon 18-200 zooms smoother and a bit faster. Also, the Canon version seems more reliable to focus, I have more keepers from Canon lens.

One thing I noticed is that the sigma lens has worse light transmission efficiency. meaning even at the same exposure and f-stop, the image coming out from canon is about 2/3 stop brighter from my observation.

hope it helps.