Sigma 50-500mm now with optical stabilization

Sigma has finally released an OS version of the famous 50-500mm telephoto zoom lens. I have the non-OS version of this lens and I can tell you this lens needs it. I can get get sharp photos no problem, it's just when the light starts to fade or if there is a lot of panning, things can get a little shaky. This is a heaver lens, so for some people the lens might cause their arm to be fatigued.

The only problem I had with my lens is my HSM motor squeaks if it focuses fast. It gets really bad in the cold. It hasn't hurt the performance of the lens yet. It's been squeaking for a couple years now. Other than OS the new 50-500mm is basically the same lens as mine. So I can speek for the lens, it will be a great lens.