sharper edge-to-edge than the Olympus m.ZD 9-18mm f/4.0-5.6 lens over the 9-12mm range and with less uncorrected CA but the Olympus is sharper at 14mm
uncorrected distortion is 3.4% barrel at 7mm, almost zero at 12mm and 1.2% pincushion at 14mm. These, like the CA are corrected with Panasonic cameras autoimatically.
“does a remarkably good job of dealing with flare”