I was about to buy a used Canon f/2.8 28-70 L lens off of Craigslist (for about $700) when a friend told me about the Tamron AF 28-75mm f/2.8. I was going to say something smart ass about Tamron, Sigma, and Tokina aftermarket glass, i.e., about them being inferior to Canon's L series, when he told me this particular Tamron lens is almost universally reviewed as being optically superior to the highly-touted Canon 28-70 L as well as Canon's newer ($1300) 24-70 f/2.8 L.
I did some research of my own and, from what I read in review after review after review, my friend did not speak with a forked tongue. The Tamron wasn't reviewed as favorably as its Canon counterparts for build quality and auto-focusing in low light, but the price difference was, well, ridiculous.
So I bought one from Amazon... for less than $400.
It will arrive by the end of the week. I'm sure I'll get to shoot with it within a week or less or so.
Anyone else have experience with this lens?
(You can read more about my latest quest for new glass on my blog and in my blog's comments at PrettyGirlShooter