Turnstyle's Noah Nelson interviewed comic book great Mark Waid, longtime creator of adventures for Superman, Batman, Spider-man and The Incredibles. He's now mastering the format's transition to digital media such as the iPad.

"That doesn't change the image but it completely changes the context of what the story is."

Take the comic Waid wrote for Marvel's new "Infinite Comics" line. A hero hurtles through space, a red-orange blur behind him. When the reader swipes the screen, the page doesn't turn. Instead the image shifts focus. The blur becomes the fiery cosmic Phoenix, the X-Men's most deadly foe.

"I got news for you, I've been doing this for 25 years and this is the hardest writing I've ever had to do," Waid said.