Doing skimmers with Oz borrowed his Sigma 120-400 and seemed to work fine, good AF acquisition and sharp. The only negative was the zooming, difficult since it was stiff. Just shot a few frames but got a few good ones. Did not change exposure settings, not bad Oscar :)
Comments welcome and much appreciated
Nikon D3
Sigma 120-400
f 6.3 1/2000
ISO 400
Av - 1/3









