Garter Snake - 11/1/2007 Common Garter Snake (Thamnophis sirtalis) Canon Powershot Pro1, 1/125, f/2.8, 10.6mm, ISO 50, handheld, no flash Common Garter Snake (Thamnophis sirtalis) Canon Powershot Pro1, 1/160, f/4, 22.8mm, ISO 50, handheld, no flash Common Garter Snake (Thamnophis sirtalis) Canon Powershot Pro1, 1/200, f/4, 10.6mm, ISO 50, handheld, no flash