Complex sentence: Most of the "Hoppies", as the films were known, were distributed by Paramount Pictures to highly favorable returns, and were noted for their fast action and excellent outdoor photography (usually by Russell Harlan).
Split into simpler sentences: Most of the "Hoppies", as the films were known, were distributed by Paramount Pictures to highly favorable returns. They were noted for their fast action and excellent outdoor photography (usually by Russell Harlan).