Depth of Field: Steve McCurry on Iconic "Afghan Girl"

Photographer Steve McCurry talks about his iconic National Geographic "Afghan Girl" photo, in the first edition of Ann Curry's "Depth of Field." The image has donned the cover of National Geographic three times since 1985, including the magazine's 125th anniversary October issue. "Depth of Field" is a series of intimate conversations with the world's leading photojournalists who reveal the stories behind their most provocative and acclaimed images.