Inspiration Photo Of The Day Photo of the Day: Thursday April 1 2010 Colorful Striations streak the walls of Zebra Slot Canyon. Canon EOS 5D with 15mm f/2.8 Sigma EX fisheye lens; 1 sec at f/16, ISO 100. | Published Apr 1, 2010 5:38 PM EDT Inspiration SHARE Colorful Striations streak the walls of Zebra Slot Canyon. Canon EOS 5D with 15mm f/2.8 Sigma EX fisheye lens; 1 sec at f/16, ISO 100. Ian Plant Photo Of The Day