His son Jeff Wexler, whose sound mixing work has earned him two Oscar nominations in his own right said his father died peacefully in his sleep.
"Pop died peacefully in his sleep, Sunday, December 27th, 2015," Jeff wrote on his website and Haskell's blog."An amazing life has ended but his lifelong commitment to fight the good fight, for peace, for all humanity, will carry on."
Haskell, who is one of few cinematographers to have received a star on the Hollywood Walk of Fame, won an Oscar for his work on Who's Afraid of Virginia Woolf? in 1967. He won another in 1977 for Bound for Glory. He earned three other nominations in the category for One Flew Over the Cuckoo's Nest, Matewan, and Blaze.
He had many more credits as a cinematographer, for films including Colorsand In the Heat of the Night, and he was also a visual consultant on George Lucas' American Graffiti. In 1993, he was given the Lifetime Achievement Award by the American Society of Cinematographers.