Deadly Exposure (1995)

Aspiring director Tyler Scott's first film is rejected because it has no violence, gore or nudity. His chief investor wants him to juice up the movie- or else. When thugs arrives to rough him up, a camera records it all- including Tyler's sudden and deadly retaliation!
Ironically, Tyler has found the key to success in making movies. He's caught raw action and violence on film- and it works! Now there's no limit to what he'll do to get the best, most exciting, realistic shots.