Photorealism was an art movement from the 1960s through 1972 known for creating highly detailed, photorealistic paintings and sculptures that were often indistinguishable from photographs. Key characteristics included using photographs as references, transferring the photographic image to the canvas through mechanical or semi-mechanical means, and achieving a high level of technical skill to make the finished work appear photographic. Notable photorealist artists mentioned include Duane Hanson, Audrey Flack, Charles Bell, Denis Peterson, and Ron Mueck.