Lens Ring for Samyang 7.5mm F3.5 Fisheye V2 (MFT Except OM-D).
Some Olympus OM-D cameras have a big protruding viewfinder housing close to the lens mount. The lens ring mount needs to be placed 1.5mm away from the camera. This is achieved by a dedicated plastic insert for OM-D in F6521. The clamping position in regularF6520is more ideal and should provide a better grip for the lens.
