In the 1950s, special-effects pioneer Petro Vlahos laid the groundwork that made a modern movie genre possible — the blockbuster.
He did it by vastly improving a composite-image process commonly known as the "blue-screen effect" for the 1959 epic film "Ben-Hur." And he did it again when he created a related technique that made Dick Van Dyke appear to dance among the penguins in the 1964 movie "Mary Poppins."
FOR THE RECORD:
Petro Vlahos: The obituary of special-effects pioneer Petro Vlahos in the Feb. 20 LATExtra section said that his...