• K&F Concept Lens Mount Adapter KF-EFM43.P (Canon EF Mount Lens to Micro Four Thirds Mount Conversion) • Model: KF-EFM43.P Authentic Japanese Product • Compatible Lens Mount: Canon EF Mount *EF lens cannot control the aperture on the lens side (no aperture adjustment ring), so it can only be used for open photography • Compatible Camera Mount: Micro Four Thirds Mount • Features: Mount conversion *When using, please turn on the camera's "Menu" - "Release without lens" to "ON". Depending on the camera model, there may be differences in the setting hierarchy of "Release" without lenses. Please refer to the user manual for each camera and make the setting