The Encounter: California Mule Deer (Odocoileus hemionus californicus) Photographed near the Yosemite Falls trail. Canon EOS 7D Mark II, EF100-400mm f/4.5-5.6L IS II USM, 234 mm, ISO 4000, 1/1250 sec at f / 8.0, © 2017, David W. Boston.