From the late 1960s into the late 70's, Graham shifted toward a largely performance-based practice, incorporating film and the new medium of video in his systematic investigations of cybernetics, phenomenology and embodiment. In 1969, he made his first film "Sunset to Sunrise", in which the camera moves opposite to the course of sun, inverting the progression of time. This piece is emblematic of his filmic work that would extend into the early 1970s, in which he would explore “subjective, time-based processes” through perceptual, kinetic exercises, using the camera as an extension of his body and implicating the subjectivity of the viewer. Other films from this period include "Two Correlated Rotations" (1969), "Roll" (1970), and "Body Press" (1970–72), all three featuring the interaction of two cameras or the juxtaposition of two films. "Roll" (1970) was a performance exercise in phenomenology similar to Bruce Nauman's early films. "Body Press," in which a naked man and woman stand back-to-back in a cylinder lined with concave mirrors filming themselves and their distorted reflections, introduces the mirrored image as a prominent theme for Graham, which he would explore extensively in his performance and video practice as well as his later architectural work.