I love this glass. I'm a mammographer, sometimes I work for money. I have a Canon 6d and usually have this lens on it. I will be selling the 24-105 f4 L that came with 6d. Great lens, but I like this one better. 2.8 is amazing, making it a great low light lens. I can't compare it to the Canon 24-70L because I've never used it, but for the price and if you're not a pro (even if you are, in my opinion) you can't go wrong. If you receive a bad copy, Revain can be exchanged easily and free of charge. I love it.
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