There are at least four great cinematographers whose work you've seen but didn't know it because few cinematographers receive any large amount of publicity when they are promoting a film. Few people outside of the film business know the names of even one cinematographer, much less what movies they have shot. However, cinematographers are one of the most important people on any crew because they give the movie its look, creating dramatic, beautiful and intense shots that make the story and the acting really shine.
Conrad L. Hall Conrad L. Hall may be one of the great cinematographers whose work you've seen but didn't know it because he has filmed some of the greatest American films of the past few decades and won numerous awards, but not many people know who he is. His work can be seen in films like "Cool Hand Luke," "American Beauty" and "Road to Perdition."
Gordon Willis Known jokingly as The Prince of Darkness, Gordon Willis is one of the great cinematographers whose work you've seen but didn't know it since he is repsonsible for some of the most beautiful, moody films ever made. He shot all of "The Godfather" films and is also well-known for Woody Allen's "Zelig" and "All the President's Men."
Roger Deakins The cinematographer for the Coen Brothers is Roger Deakins and he is also one of the great cinematographers whose work you've seen but didn't know it. Deakins has a long list of films he has shot before joining the Coen Brothers, but his most notable films are "No Country for Old Men" and "True Grit," which he filmed recently.