An Informal look at Format Size
Last October I was photographing San Francisco from Twin peaks as the city lights came on. During this time I had both my phones with me which I used to preview the scene. I happened upon the photos recently and realized there was an informal demonstration to be had. They where all taken within a few minutes of each other from the same location, but since exposure settings don't match this is hardly an accurate test and more of an interesting demonstration. iPhone 5s - f2.2 - 1/15th - ISO 1600 - Area 17.5mm^2 -7:17pm Lumia 1020 - f2.2 - 1/5th - ISO 800 - Area 58mm^2 - 7:15pm RZ 67 - Provia 100 - f 4 - Area 3752mm^2 - ~4sec *Because I can just hear the outrage over the difference in ISO (4 stops) a quick flickr search (of images that I felt looked nice) gives an idea that 800 or 1600 wouldn't have drastically made a difference for the 6x7, or that the phone shot at 160 would be drastically better.