The Best Superzoom Lens I've Owned

This lens meets my needs on my Canon DSLRs better than any other lens of this type. I've owned the Canon 18-200IS since it was released and this new Sigma bests it easily: Better IQ, faster AF and lighter. I used an earlier version of this lens, without the "Macro" appellation on a Sony A55. I preferred that Sigma to the Sony 18-250 -- but this one is more capable, lighter and smaller.

All such lenses are a compromise. But this is the best of these "compromises" I've found.

Problems:

No problems