I know the iPhone 5 takes photos with a 4:3 aspect ratio. I have been using 4x6 photo paper which is a 3:2 aspect ratio. So needless to say the photos are zoomed in when I print and I often lose the edges. Is there any way to take photos or crop to a 3:2 ratio? Or what size paper would the iPhone print well on without cropping the edges?
I use ProCamera almost exclusively for picture-taking with my iPhone for myriad reasons. One feature I have yet to use: it has all the standard aspect ratio presets for taking pictures, including 3:2. For pictures you've already taken, there are photo editing apps that will allow you to crop to preset ratios, including 3:2 (Snapseed is a free one that comes to mind). Or, there's Filterstorm, a very powerful photo editing app (and total overkill for the task) that allows you to change canvas size by adding bars on the sides or top/bottom so you can get your aspect ratio without cropping.