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Title: Vignettes on Canon 5D Mk II
Review: I'm giving this one star because it is useless on a 5D Mk II. This may be a good lens for other bodies and cropped sensors (although not wide enough for cropped sensor cameras for my taste).I bought this for my Canon 5D Mk II. It vignetted very noticeably at all focal lengths indoors but pointed at the sky outdoors seemed OK.Took it back to the camera store, and they put another copy of the lens on a different 5D Mk II and it vignetted too. It was very noticeable. The camera store guy, who is not a rookie, couldn't figure it out after playing around with it for a half hour. He put a call in to Tamron.So even though the lens seems sharp, it was a big disappointment. I was hoping this would take the place of buying the 24-70 L lens.For now, I'll keep using my primes which are great.
