Watch Interpolations I-V (1992) Online

"The full 35-millimeter frame allows for more detail and diversity than Brakhage's customary narrower gauges. In the first section, multicolored blobs contrast with fuzzy photographed lights; in the third, flickering specks become hundreds of tiny rods and later cracks in paint. Rhythmic complexity has long been a characteristic of Brakhage's work, but the series takes polyphony to new heights by creating different movements in different portions of the frame; there's a sense of shapes being generated and reabsorbed in a cosmic vision of eternal change." -- Fred Camper, Chicago Reader. Preserved by the Academy Film Archive in 2016.