ktownhero wrote in post #14098027
I think it does. The Sigma offers image stabilization, fantastic build quality, exceptional IQ, a free soft case, and a 4 year warranty. All at half the price of the Canon 17-55, and reasonably more expensive than the non-image stabilized Tamron.
I think compared to the Canon, you're absolutely correct. Compared to the Tamron, not so much. Tamron is superior, in I.Q., at almost every focal lenght (50mm they are pretty even). As for build quality, they are both built well. As for Image stabilization most would agree that it isn't as helpful as putting OS on a longer focal lenght. Also, Tamron has a 6 year warranty.
The Sigma is still a highly regarded, great lens that's a really good competitor to both Canon and Tamron, but Tamron still holds a good edge when it comes to I.Q. If you want to compare the Sigma to the Tamron VC, then I'd say you have a better case, but the non VC, not so much.
Oh yeah... don't forget about the "Sigma Lottery" cause you just don't know what you're going to get.. lol