On a late October visit to Grand teton National Park I came across this Bull Moose and nearby was a female. It was rut season and the Bull was giving me the eye letting me know I was too close for comfort. Being Canadian I am familiar with Moose and so I parked myself behind a tree with my camera in case of a charge. All went well. Camera was a Canon 5D Mk III with a Canon 500mm f4 lens which also had a 1.4 extender attached so I was at 700mm on a tripod. A safe distance from Mr. Moose...I think. Settings as follows. Aperture 5.6, speed was 1/500 sec and ISO was at 800.