Although he was probably best known for his early and innovative adoption of color, Feldman left a wide legacy that is beyond categorization. His early career in the 1940s focused mainly on under-represented segments of society. It wasn't until the early 1960s with Life and Look magazines that his signature use of color really developed. In an era of staid traditionalism he embraced camera shake, lightleaks, and unconventional framing.
This continued through the 1970s and 1980s as his work somehow became both increasingly radical and uninflected. In 1989 he abruptly abandoned color to return exclusively to b/w, this time using large format lithography film to make his famous livestock studies. To the end he never stopped exploring, and he was creating new photographs right up until his last days.
Although his photographs are widely distributed in collections, Feldman always flew a bit under the radar. He retired from public view in the early 1990s and much of his work is barely remembered today. That he was not computer savvy didn't help. It's very difficult to find anything about him online, either biographical or actual images. But that shouldn't diminish his legacy.
He is survived by his wife, two sons, and 7 grandchildren. Truly he was a giant in the field and an inspiration to all.