Steadicam, as technology People & Technology

Steadicam is a camera stabilization system invented by Garrett Brown in 1975. The operator wears a body-mounted harness with a spring-loaded arm that isolates the camera from the operator's movements, producing smooth, floating shots that were previously impossible without dolly track or crane. Brown first demonstrated the system publicly with Rocky (1976) and Bound for Glory (1976); Stanley Kubrick's The Shining (1980) became the format's showcase.

The system changed how directors could stage long takes. Before Steadicam, extended tracking shots required laid track and rehearsed dolly operators. After Steadicam, a camera could follow an actor through doors, up stairs, around corners, and through crowds in a single unbroken shot.

In the wiki

Film	Page	Summary
Blow Out (1981)	Production History (Blow Out)	Garrett Brown brought the Steadicam to a De Palma film for the first time
Blow Out (1981)	Physical Media Releases (Blow Out)	Criterion Blu-ray includes a 15-minute Garrett Brown Steadicam demonstration as a special feature