Beyond sharing, the E-M1's Wi-Fi capabilities are more comprehensive than they are on the E-P5. The E-M1 allows tethered shooting over Wi-Fi, with the ability to shoot in program, aperture, shutter-priority, and manual exposure modes, whereas the E-P5 was limited to iAuto. You can also set exposure compensation, ISO, white balance, specify the focus point and release the shutter.