From Holly With Love (1977)

Holly’s on all fours on a living room couch, dim lighting casting shadows as some guy pounds her from behind in doggy. You can see her back arch and her hands gripping the cushions, moaning between breaths. She’s got dark brown hair, slim frame, totally into it — this isn’t one of those fake-noise jobs. Earlier, she was topless in the living room, then later gets facial close-ups while sucking dick in bed. The kitchen scene shows her grinding against the guy at the table, both mostly clothed but touching under soft indoor light. Camera sticks to medium and close-up shots, never goes full wide when the action starts.