I am mostly a film photographer. But with the introduction of the iphone, I have been seduced by "iphoneography" One of my favorite techniques in analogue photography is double exposures. For those of you who don't know what a double exposure is, its exactly what it sounds like. Exposing the film twice, essentially creating two pictures on top of each other. On film this takes some planning so as to not "over expose" the film and you must have a strategy to get the composition you'd like. But with digital we can blend the two pictures after the fact. Adjusting exposure and composition with editing software or an app.