James Cameron says the third installment in the Avatar franchise, “Fire and Ash,” let him explore grief in a way big spectacle films rarely do. He argues that unlike superhero movies that bring characters to a “baseline,” real grief transforms people and wanted this story to reflect just that. | CBS Sunday Morning

The director of “Titanic,” “The Terminator” and the “Avatar” series, which used performance capture technology to help create fantasy characters in 3-D, has consistently raised the level of movie visual effects. But Oscar-winner James Cameron tells Jonathan Vigliotti that he believes the use of artificial intelligence to create a character and performance without an actor is “horrifying.” | CBS Sunday Morning