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.

Features:
Gold-plated electronic contact, Auto-focus function.
It can realize AF, adjustable aperture from camera body to lenss aperture.
More durable metal material.
Allow for Canon EF mount series lens to be used on M4/3 camera.
Focus length multiplier: 0.71x.

Specifications:
Model: EF-M2;
Compatible Lens: For Canon EF mount series lenses;
Compatible Camera: For M4/3 series cameras;
Focus Mode: Auto focus;
Focus Length Multiplier: 0.71x;
Optical Glasses: 4 groups, 4 glasses;
Tripod Socket: Cu 1/4" 1;
Diameter and Length: 67mm 25mm;
Front Cap: Camera cover;
Rear Cap: Lens dust cap;
Item Weight: Approx. 138g / 4.9oz (excluding cap);
Package Size: 11 10 6cm / 4.3 3.9 2.4in;
Package Weight: 310g / 10.9oz;

Package List:
1 EF-M2 Mount Adapter;
1 Front Cap;
1 Rear Cap;
1 Hex Wrench;
1 Cross screwdriver;
1 User Manual ;

Note:
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.