A friend and dressage trainer asked me to photograph at her farm recently. It was a real challenge to go from photographing landscape to photographing horses in motion. The Canon 70-300mmL F4-5.6 lens is not a fast lens for action, but with the new Mark III, and its ability to shoot a very high ISOs with a minimum of noise, the lens was more than adequate. I shot at ISO2000 most of the time with excellent results, hand held with speeds of 1/500 to 1/1000 sec..at F8, I found the background wasn't blurred out enough so I switched to 5.6 or 6.3 and found the results much better...here are a few examples of the shoot.
