I am receiving the new Samyang 7.5mm FE for MicroFourThirds for a panorama test early next week and I was wondering if I could use the R1 lens ring for the Panasonic 8mm MFT for this lens.

I anyone could give me the inner diameter and the the thickness (or should I say wideness) of the Panasonic ring, I can figure out next week if it will fit or not

Thanks

Karel