He was nationally known for his landscape photography, scenic calendars (which have been published for over 30 years) and for his many coffee table books and travel guides—including Colorado's best-selling Colorado 1870–2000, in which he matched the same scenes of classic photographs taken in the 19th century by photographer William Henry Jackson.
[1] A Washington, DC, native, Fielder moved to Colorado upon graduation from Duke University, where he studied accounting.
[6] In January 2023, Fielder released the entirety of his over 5,000 photographs into the public domain, with History Colorado as caretaker.
His photography influenced people and legislation, including the Colorado Wilderness Act of 1993, and earned him recognition, including the Sierra Club's Ansel Adams Award in 1993, and in 2011, the Aldo Leopold Foundation's first Achievement Award given to an individual.
He was an original governor-appointed member of the lottery-related board of Great Outdoors Colorado, and spoke to thousands of people each year to rally support for land use and environmental issues.