Neewer slim C Mount Lens to Micro 4/3 Four Thirds MFT System Camera Mount Adapter, fits Olympus PEN E-P1 P2 P3 P5 E-PL1 PL1s PL2 PL3 PL5 PL6 E-PM1 PM2 OM-D E-M5 E-M1 Panasonic Lumix DMC-GH1 GH2 GH3 GX7 G1 G2 G10 G3 G5 G6 GF1 GF2 GF3 GF5 GF6 GX1 GM With the est slim C mount adapter for micro 4/3 mount camera (Panasonic GF1, GF2, GF3, GH2 etc and Olympus E-PL2, E-PL1, E-P2 etc) The mount can be used for CCTV C-Mount Lens Ring Specification: C-Mount