The iPhone 4S (so, the one in all the demo photos) has a screen resolution of 640×960 at 326 ppi, and the Enfojer uses plastic "toy camera" lenses similar to th

The iPhone 4S (so, the one in all the demo photos) has a screen resolution of 640×960 at 326 ppi, and the Enfojer uses plastic "toy camera" lenses similar to the ones in Lomography cameras, so the results are always going to be slightly blurred.