* James Cameron: His first feature film was "Xenogenesis" in 1978. However, it's important to note that this film was never officially released and is considered lost.
* Cameron Diaz: Her first film was "The Mask" in 1994.
* Cameron Crowe: His first film was "Fast Times at Ridgemont High" in 1982, though he wrote and directed the short film "The Right Stuff" in 1983.
Please clarify your question if you're referring to someone else named Cameron.