As a professional wildlife photographer, my first and foremost desire is to record my subjects without disturbing natural behavior. Wild animals are naturally skittish, and many are dangerous to approach, so I frequently need to use long focal length, super-telephoto lenses to make my photographs. Canon EOS R5, Canon RF800mm F5.6 L IS USM. Exposure: 1/1600 sec., ƒ6.3, ISO 500. I could think of no better place to test the new Canon RF800mm F5.6 L IS USM than Yellowstone, America’s first national park. Canon’s corporate philosophy of Kyosei means we strive to have a positive impact on society, and coincidently, this year we celebrate Canon’s 25th anniversary of sponsoring Yellowstone Forever, the nonprofit partner of Yellowstone National Park. Photographing predators in...