[RSStory]

I can only speak of the sigma lens you mention. I bought it and I sold it... Was very soft. My camera sales person told me to look at Tamaron or Tokina I think. But the canon is a a great lens. If you can afford it I would go that way. It will be the sharpest . Now, I shoot all prime lenses in the studio. My canon 85mm 1.8 lives on my camera now. Sharp as a tack. Canon primes are great.