after years with the oly FT 7-14, I'm now on the Lumix MFT 7-14 f4 switched. I use it at the Oly E-M1. As expected, shows the developed image MFT virtually no distortion (software corrects the distortion, as well as the vignetting). the sharpness at the edge regions is a tad better than the FT oly objective and thus fully within my expectations. sensitivity to flares is super wide angle usual flashy. the workmanship is good, but holds a comparison with oly 12-40f2.8, 40-150f2.8 Pro level was not far (use plastic-feeling). I am satisfied, an objective that is fun! something negative in the oly not ta corrected fringing may be mentioned, however, which can be personalized with a few clicks in Lightroom eliminate. on a panasonic body, the correction is probably already running inside the camera. who, like me in a super wide-angle lens can dispense with f2.8, no need to wait for the oly 7-14f2.8. the now greatly reduced price is fully OK. I bought used and the achieved purchase price, shows a vulnerability to significant loss in value.
