Complex sentence: It was also his idea that the film should be filmed in CinemaScope, which was warmly approved by John Lasseter: Because this is a movie with such scale and we have the Norwegian fjords to draw from, I really wanted to explore the depth.
Split into simpler sentences: It was also his idea that the film should be filmed in CinemaScope, which was warmly approved by John Lasseter. As he explains, Because this is a movie with such scale and we have the Norwegian fjords to draw from, I really wanted to explore the depth.