
I was looking at buying it as an alternative to the extremely pricey Canon variety. At first I thought, if I'm spending $900, I might as well spend the extra $300 to get the Canon. But then, I thought that I could use that $300 put it with some more cash, and get the 580 EX Speedlight (which I've been needing)
I've heard some very positive things about this lens, but I wanted the opinions of people here who own or have used it in the past.
So what's up, guys?