Superman (1939). Certain materials such as lead can block his X-ray vision. Superman can project beams of heat from his eyes which are hot enough to melt steel. He first used this power in "Superman" #59 (1949) by applying his X-ray vision at its highest intensity. In later stories, this ability is simply called "heat vision". Superman can hear sounds that are too faint for a human to hear, and at frequencies outside the human hearing range. This ability is introduced in "Action Comics" #11 (1939). "Action Comics" #1 (1938) explained that Superman's strength was common to all Kryptonians because they
Superman in film films was marred by Donner's bad relationship with the Salkinds, with Richard Lester acting as mediator. With the film going over-budget, the filmmakers decided to temporarily cease production of "II" and move that film's climax into the first film. Despite "Superman"'s success, Donner did not return to finish "Superman II", and it was completed with Lester, who gave the film a more tongue-in-cheek tone. The Salkinds also cut Brando for financial reasons, while John Williams quit as composer due to turning his attention to other projects. "Superman II" was another financial and critical success, despite stiff competition with "Raiders of