I bought a new lens, the Sigma 120-300 2.8. I took it to the zoo to test it out and am quite pleased with how this lens works. Focuses fast, is sharp and has fine contrast. For the price and the fact it is a 120 to 300 2.8 zoom this lens is really quite impressive.

I was somewhat reluctant to get this lens as all my other lenses have been and are Canon "L" lenses. I am not disappointed in this lens at all. I am quite certain the Canon 300 2.8 is better, it is one of the best 300 2.8 lenses made, but for as little as I need a 300 2.8 this Sigma is perfect.