Fixed aperture lens (f2.5) made to be a circular fisheye on MFT video-mode sensors, covering a 10mm circle.
It was made on purpose to make VR multi-cams, and to operate in video mode.
Take a look at the manufacturer’s website under “technical specifications” to discover about angular coverage.
iZugar 3.25mm MKX22 Fisheye MFT
incredible 220° fisheye for mft sensor cameras