Constructed of 10 elements in 7 groups Compatible with Panasonic GH1 GH2 GH3 GH4 GH5 GH6 G1 G2 G3 G5 G6 G7 GF1 GF2 GF3 GF5 GF6 GM1 GM5 GM10 GX1 GX7 GX8, Olympus epm1 epm2 E-PL1 E-PL2 E-PL3 E-PL5 E-PL6 E-PL7 E-M1 E-M5 E-M10 MFT Angle of view: Diagonal 34°, aperture range: f0.95 - f16 Minimum focusing distance: 0.39m, filter size: ø52mm; Diaphragm Blades: 13 FULLY MANUAL: Please go to your camera CUSTOM FUNCTIONS and ENABLE release SHUTTER W/O LENS option in order to take pictures 1