Specially designed for EOS mount lens to be used with MFT M4/3 camera. It allows you to control the aperture from camera. Before using the adapter, please ensure the adapter is compatible with your lens.Features:Specially designed for EOS mount lens to be used with MFT M4/3 camera.Allows you to control the aperture from camera.EXIF signal transmitting and being displayed on Camera Screen.Manual focus, can reach infinity focus.Gold-plating contact, excellent transmitting effect.Supplied with lens release lever to quick release and install.1/4 screw to mount onto the tripod. Specifications:Product Model: EF-MFTMaterial: Aluminum AlloyCompatible Lens: for EF/EF-S Series LensCompatible Camera: for M4/3 Mount CameraFront Installation: EF/EF-S Series LensBack Installation: M4/3 Mount CameraCamera-mount Outer Diameter: 39mmLens-mount Outer Diameter: 67mmItem Size: 8.2 * 6.3 * 3cm / 3.2 * 2.5 * 1.2inItem Weight: 139g / 4.9ozPackage Size: 10.7 * 9.4 * 5.4cm / 4.2 * 3.7 * 2.1inPackage Weight: 180g / 6.3ozCompatibility:M4/3 Cameras:For Olympus PEN E-P1 P2 P3 P5 E-PL1 PL1s PL2 PL3 PL5 PL6 E-PM1 PM2 OM-D E-M5 E-M1;For Panasonic Lumix DMC-GH1 GH2 GH3 GH4 GX7 G1 G2 G10 G3 G5 G6 GF1 GF2 GF3 GF5 GF6 GX1 GMFor BMPCCEF/EF-S Lenses:For (Zoom)EF 10-22 /3.5-4.5 USMEF 16-35/2.8L USMEF 16-35/2.8L II USMEF 17-40/4LEF-S 17-55/2.8 IS USMEF-S 17-85/4-5.6 IS USMEF 8-15/4L USMEF-S 18-55/3.5-5.6EF-S 18-55/3.5-5.6 IS IIEF-S 18-135/3.5-5.6 ISEF 20-35/2.8L (Ver.18)EF 22-55/4-5.6EF 24-70/2.8L (I)EF 24-105/4L IS USMEF 28-70/3.5-4.5 IIEF 28-80/3.5-5.6 IIEF 28-135/3.5-5.6 IS USMEF 35-80/4-5.6EF 35-350/3.5-5.6LEF-S 55-250/4-5.6 ISEF 70-200/2.8L IS USM (I)EF 70-200/4L IS USMEF 70-300/4-5.6L IS USMEF 70-300/4-5.6 DO IS USMEF 80-200/2.8LEF 100-300/4.5-5.6 USMEF 100-400/4.5-5.6L IS USMFor (Fixed focus)EF 14/2.8LEF 20/2.8 USMEF 24/1.4L IIEF 24/2.8 (old version)EF 35/1.4L USMEF 40/2.8 STMEF 50/1.2L USMEF 50/1.4 USMEF 50/1.8 IIEF 50/2.5 macroEF 85/1.2L II USMEF 85/1.8 USMTS-E 90/2.8EF 100/2.8L IS USM macroEF 135/2L USMEF 180/2.8L macroEF 200/2.8L II USMEF 300/4L IS USMExtender EF 1.4x IIIExtender EF 2x (I)Planar 50/1.4Planar 85/1.4EF 180mm f/3.5L Macro USMFor Sigma10-20 /3.5 EX DC HSM12-24/4.5-5.6 I  DG HSM12-24/4.5-5.6 II  DG HSM17-35/2.8-4 EX HSM ASPH17-70 /2.8-4 DC Macro OS HSM18-125/3.5-5.6 DC OS HSM24-70/2.8 EX HSM150-500/5-6.3 DG OS HSM20 /1.8 EX DG30/1.4 DC HSM35 /1.4 DGFor TAMRON18-270/4.5-6.3 VCSP 28-75/2.824-70VCSP 70-200/2.8 Di VCSP 150-600mm f/5-6.3 Di VC USD90/2.8 (172E)28-75/2.8 XR Di LDZE Distagon 21/2.8ZE Distagon 15/2.8ZE Makro-Planar 50/2ZE Makro-Planar 100/2Package List:1 * Lens Adapter RingNote:Camera and lens are not included.EXIT and Aperture parameter can be transmitted to camera and be controlled; Manual focus, can reach infinity focus.The lens will automatically calculate the exposure after setting the correct shooting or video mode.In shooting mode, while the camera shutter can't be pressed down (or with non-lens prompt), please change the settings to "Release shutter without lens" or "Aperture priority".