Performers were often told the videos would only be sold to private collectors.

For those entering the field, the industry maintains rigorous professional standards: : Essential guides like The Documentary Handbook

Modern documentaries often function as investigative journalism, highlighting problems like the draconian movie rating systems in This Film Is Not Yet Rated (2006) or the grueling work hours and sleep deprivation faced by crew members in Who Needs Sleep? (2006). 2. Major Themes and Key Films