Fotasy AMME Auto Focus Marco Extension Tube 10mm 16mm 26mm for Olympus Panasonic Micro 4/3 MFT Mount Cameras This extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance. Getting closer has the effect of magnifying your subject. Designed with all the circuitry and mechanical coupling to maintain auto focus and auto exposure with Olympus Panasonic MFT Micro 4/3 M43 lenses It comes as a set of 2 tubes of different lengths which singly or in combination on makes it usable in 3 different lengths, 10mm, 16mm, 26mm. Compatible with Panasonic G1 G2 G3 G5 GH1 GH2 GH3 Gh4 GF1 GF2 GF3 GF5 GF6 GX1 GX2 GX7 GM1, Olympus E-P1 E-P2 E-P3 E-P5 E-PL1 E-PL2 E-PL3 EPL5 OM-D E-M1 E-M5 E-M10 E-PM2 E-PM1 Also compatible with Manual Lens, but Auto Focus Function will not supported.