Metabones SpeedBooster ULTRA 0.71x PL to M43 mount
This Speed Booster Ultra 0.71x Adapter allows you to mount a PL lens to a Micro Four Thirds mount camera.
It reduces the effects of the cropping factor offering a 0.71x magnification to make the lens wider. It also increases the maximum aperture by about 1 f-stop, while reducing spherical aberrations and distortion to help preserve the quality of your image.