Il predatore invisibile (1983)

She’s got short dark hair, tanned skin, and a slim build with small tits — you see her lying on a bed in a soft-lit bedroom, wearing just panties, pulling the waistband to the side before touching herself. She moves to a living room couch in a plaid shirt, no pants, grinding on a guy off-camera, riding up and down hard, full bounce, shirt open, no condom. Then she flips to doggy, ass in the air, back arched, getting pounded deep — camera zooms in tight on her hips and the movement. Later she’s back on the bed, on her back, legs spread, receiving thrusts in missionary, face in view, mouth open. The lighting stays warm throughout, lots of close-ups on her body, sweat on her stomach, the way she pulls at her nipples. Camera work is steady, not shaky, with clear focus on the action and her reactions.