Nature Photographer Scott Alan Johnson has crossed a photographic fourth wall, involving squirrels as photographers in his photographs of squirrels. On his Photographing Squirrels site, Johnson explains that squirrels prefer vintage camera equipment, eschewing modern digital gear due to its complexity. Johnson also mentions that the squirrels have formed an organization called ACORN (American Camera Organized Rodent Network) to advance their hobby. View the photos on Flickr (recommended: slideshow) to see what all the squirrel buzz is about.