So I'm now down to the point of wanting to get my own fast 50mm lens for under the basket, baseline type shots to be used on my 40D. I have read quite a bit, both good and bad about both these lenses. Both have their pluses and minuses.
The Canon is cheaper and lighter (I've found a Canon refurbished unit for $344 at a reputable source), but the Micro USM is suspect and some say the edges aren't all that sharp. I've test drove a rental version of this lens and wasn't at all happy with it shooting basketball. Was it me? Was it that it was a banged up, back focusing rental lens? Was it my lighting at the time? I liked the lens for non action shots as it seemed nice and sharp and the BG blur was amazing. But it's first job will be for sports.
The Sigma is much bigger and a bit heavier. People say it is extremely sharp, all the way out. But finding a sharp copy of one is the trick. Most have said that the lens needs to go back to Sigma to be calibrated before it's a good lens. PITA! I also don't know if it's HSM ring-type focus motor is up to the task of following and locking onto fast action in a middle school gym. It's also more expensive. A new one can be had for about $450 to $499.
Any advice on this one? Anyone use the Sigma 50mm f1.4 for sports?