Glenn Randall has been a full-time photographer, writer, and instructor for 43 years. He is a contributing editor for Outdoor Photographer magazine and in the course of his career over 2,000 of his photographs have been published, including 88 covers. He has also sold over 10,000 prints.

Three books of his landscape photographs have been published, Colorado Wild and Beautiful, Rocky Mountain National Park Impressions, and Sunrise from the Summit, which showcases images Glenn captured at sunrise from the summit of all 54 of Colorado’s 14,000-foot peaks. His first textbook, The Art, Science, and Craft of Great Landscape Photography, was published in 2015; the second edition was published in June, 2020. His second textbook, Dusk to Dawn: A Guide to Landscape Photography at Night, was published in spring 2018.