'Like Crazy': The Romance and Reality of HDSLR Filmmaking .From http://www.dv.com

Director Drake Doremus and cinematographer John Gulesarian initially planned to shoot the indie love story Like Crazy with a combination of RED ONE and Canon EOS 7D cameras: RED would be the primary tool, and the 7D would serve as a B-camera for grabbing shots on the run or getting very close to the actors in small spaces.
7D fitted with ARRI Ultra Prime lenses, however, they decided that they had the look they wanted for the entire feature.
Director of photography John Guleserian
Photo by Fred Hayes
Like Crazy tells the story of Jacob (Anton Yelchin) and Anna (Felicity Jones), who fall in love while attending college in L.A. and try to keep the magic going after British citizen Anna is forced to return to London. Doremus had developed a style of working with actors on his previous effort (his debut feature, Douchebag) of not formally blocking anything, instead allowing the actors to find their space on their own. Recalling their preproduction period, Guleserian says, "We realized that we could shoot the entire movie on the 7D and it would really add to the aesthetic Drake was after."

(L-R) Director of photography John Guleserian, Anton Yelchin, Felicity Jones
Photo by Fred Hayes