
"But that's just one of the mysteries," comments Knoll. "The next step was to figure out what type of lens had been used to shoot the sequences." Using a different lens would change the aspect of the image. "Luck smiled at me on this one," continues Knoll. "I managed to get a hold of Peter Daulton, who had been Assistant Cameraman on Jedi. He believed what I was looking for was a 24 mm lens, and sure enough, my 24 mm computer lens matched the shots from the classic roll-ups."
The speed at which the text travels from the bottom to the top of the screen also needed to be an absolute match. "What I did for this one," says Knoll, "is watch one of the existing roll-ups, and count the frames between the moment when one line of text breaks the bottom edge of the frame, and the moment the next line does." This told Knoll exactly how fast the opening needed to flash by in Episode I.
Two more delicate adjustment had to be done "by eye", the first one being color. "We laid out several different color samples, and compared them to the old roll-ups," explains Knoll. "It was only a matter of choosing the one shade that was exactly like what they had used in the classic trilogy." The last variable, the tilt angle, was tracked down using a similar, old-fashioned technique. "I used a scanned frame from the Star Wars crawl as a background image, and simply tilted the camera until the perspective lines matched," Knoll says.


















