The Sigma 18-200 OS is nice, it's my everyday lens. I'm sure for a pro, the aperture would be an issue, and the Canon lenses are reviewed slightly higher in terms of optical quality, but for your average person I think the difference isn't worth the dollars. Walking around with one lens for most shots I would ever take, including macro, portrait, landscape and zoom shots is pretty decent. It's easy to start spending money, but I'm perfectly happy with the quality of the shots that I get from my lens for just about any purpose I would have.
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onetwo and threefour... Together no more. The end of an era. Let's rebuild...
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