No surprise that the Duo has already hit their Kickstarter goal. What is it? It’s a freaking DIY twin lens reflex camera that shoots on instant film. That’s what it is. The kit provides the body, but you would need to provide your own lens and Polaroid back, which lets you shoot on Fuji peel-apart film, the same kind of film a Polaroid Land 100 uses. You can also use a roll back to shoot on 120 film.