Stalking Leopard, near Vumbura, Okavango Delta I was lying flat in the grass - protected by a vehicle that could drive in front of me just in case - the leopard was about 100ft away. I was holding my 1200mm lens (33lbs) with my hands. BIggest challenge was to focus thru the grass. The autofoces did not work well.... published on covers and in editorials in various Magazines around the world