I've always ran my S4 with a modified DPI and for those who know what thats like, stock applications may not fit correctly. I tried to fix this and totally screwed it up. Has anyone got a backup of the camera files from the system? flashable or just a ZIP with them all in will suffice. I have found a way to now change the DPI easily PER application how I originally intended but in a user friendly way which I'll share for those who require it.