Here is one of my favorite images from a trip to Botswana a number of years ago, after I had just gotten my first DSLR. The shooting conditions were far from ideal. We were mobile camping and I had just stepped out of the open-air shower attached to our tent (with low walls though) when I called to my wife to quickly hand me my camera. I did not have time to play with any settings, and managed to get two shots. Canon 60D + 100-400 mm f/4.5-5L.6 IS USM.
Ed
SF Bay Area
