Back to Index Blue-gray Gnatcatcher Polioptila caerulea    Copyright David Seibel, 2013 (#7082) | Send Comment Camera: Canon EOS-1D Mark IV Exposure: 1/640 sec, f/20.0, ISO 2000 Lens: Canon 500mm f/4L IS + 2x II TC Date: July 6, 2013 Location: Perry Lake, Kansas, USA