iPhone takes 2592 x 1936 pics in either orientation, so its sensor is square 2592x2592 = 6.7MP. Why not have an option to shoot square 6.7MP photos? Can be useful for cropping later, or sometimes 1:1 aspect ratio is dictated by the subject (e.g. taking a pic of a square map for reference). I wonder if full 6.7MP resolution is accessible via iOS4 API? Developers?