Resolution easily reached an Excellent rating by capturing 2675 lines per picture height at ISO 80. That’s about the same as the Panasonic’s 2660 at its lowest sensitivity of ISO 100. At ISO 800 the Pen-F fell to 2600 lines, while the GX8 slipped down to 2550, both still enough for Excellent ratings. ISO 1600 saw the Pen-F at 2550 lines, while the GX8 dropped to 2340. We should note, though, that Panasonic seems to be more aggressive than Olympus in its noise reduction, which affects resolution. At ISO 6400, the Pen-F’s resolution drops to 2225 and thereafter drops faster to 1825 at ISO 12,800, and then 1600 at the camera’s top sensitivity of ISO 25,600.