Photographer Callie Shell first photographed then-state-senator Barack Obama in 2004. When he announced he was running for President, she asked if she could cover him from the very first days of the campaign. She continued to follow him, shooting for TIME magazine through election day last year. When Obama took office in January, Shell proposed a project to tell the story — with remarkable behind the scenes access — of the first months for the Obama’s in the White House. I sat down with Callie last week, and put together a short documentary about her photographs from Obama’s first 100 days.