From Wikipedia on The Incredibly Strange Creatures Who Stopped Living and Became Mixed-Up Zombies:
“The cinematography/camera operating was done by three men who would go on to become major figures in cinematography: Joseph V. Mascelli, author of The Five Cs of Cinematography; Vilmos Zsigmond (listed as William Zsigmond), who won an Academy Award for his work on Close Encounters of the Third Kind; and László Kovács (listed as Leslie Kovacs).”
Lazlo Kovacs worked on a number of low budget films (Mondo Mod among them) in the 1960s. Even Easy Rider (the film that made his name) wasn’t considered to be a big film during production.