I don't know how closely you nature guys follow my articles or gear announcements. But I'm sure some of you will be interested in the newest version of the Sigma "BIgma" 50-500mm zoom. It now has Sigma's OS Optical Stabilization system, making it a much, much more versatile lens. I got to see it at PMA, last week. Check out our video of all five new Sigma lenses, including the image-stabilized Bigma.
Five New Sigma Lenses At PMA >>