Originally Posted by MaximusJ
Just to compare with Nikon, how much is that lens worth? I saw good reviews about the sigma too; for a fraction of the price. I'm gonna have to try it out at the store.
I couldn't find a Sigma 300mm prime, but their zoom is even in the same league as Canon's 300/f2.8 II:
Sigma give great value, but they're not top performers optically. I wonder why they don't come out with a few primes, now that both Canon and Nikon's super-teles are in the stratosphere.