Viltrox EF-M2 mount adapter is designed to allow for Canon EF mount series lens to be used on M4/3 camera. Plus 0.71 based on the original focal length (equivalent focal length=focal length x0.71), which help enlarge 1 level aperture. Build-in 4groups, 4pcs optical glasses, AF(auto focus) and adjustable aperture, etc.

It is normal that it is a bit loose when the lens mount adapter is installed on Panasonic camera and a bit tight on Olympus camera.

Camera and lens are not included.

Gold-plated electronic contact, Auto-focus function.It can realize AF, adjustable aperture from camera body to lens's aperture.More durable metal material.Allow for Canon EF mount series lens to be used on M4/3 camera.Focus length multiplier: 0.71x.Brand: ViltroxModel: EF-M2Compatible Lens: For Canon EF mount series lensesCompatible Camera: For M4/3 series camerasFocus Mode: Auto focusFocus Length Multiplier: 0.71xOptical Glasses: 4 groups, 4 glassesTripod Socket: Cu 1/4" * 1Diameter and Length: Φ67mm×25mmFront Cap: Camera coverRear Cap: Lens dust capItem Weight: Approx. 138g / 4.9oz (excluding cap)Package Size: 11 * 10 * 6cm / 4.3 * 3.9 * 2.4inPackage Weight: 310g / 10.9oz1 * EF-M2 Mount Adapter1 * Front Cap1 * Rear Cap1 * Hex Wrench1 * Cross screwdriver1 * User Manual (English & Chinese)