Mount adapter Commlite CM-AEF-MFT II — Canon EF to Micro Four Thirds

Commlite CM-AEF-MFT II — Canon EF to Micro Four Thirds mount adapter enables use of Canon EF lenses on Micro Four Thirds (MFT) camera bodies. The adapter preserves the mechanical connection between EF mount lenses and MFT bodies, allowing manual control of aperture and focus where the lens supports it. It is designed for photographers and videographers who want to reuse existing EF glass on MFT systems for shooting, testing, or creative adaptation.

Advantages

The adapter provides a secure metal-to-metal mount with precise flange distance compensation to maintain correct focus on MFT bodies. Its construction supports stable lens attachment and reliable alignment without electronic communication, making it a straightforward, durable solution for mounting EF optics on MFT cameras. The CM-AEF-MFT II is lightweight and compact, minimizing additional bulk while keeping optical axis integrity.

Suitable for

• Photographers who want to use Canon EF lenses on Micro Four Thirds cameras
• Videographers adapting EF glass for MFT video rigs or gimbals
• Lens testing and evaluation on MFT bodies
• Users reusing existing EF lens collections with MFT camera systems

Key specifications

• Mount type: Canon EF (lens) to Micro Four Thirds (camera)
• Material: metal construction for the mount interface and body
• Functionality: mechanical adapter without electronic contacts
• Controls: supports manual aperture and manual focus where lens allows
• Compatibility: fits Canon EF/EF-S lenses and Micro Four Thirds camera bodies
• Form factor: compact and lightweight design to reduce added bulk

How to use

Attach the Commlite CM-AEF-MFT II to the rear of a Canon EF lens by aligning the lens mount index and twisting until it locks. Then align the adapter with the Micro Four Thirds camera body mount, insert and rotate until the adapter clicks and secures in place. Set the lens to manual focus and, if available, manual aperture control on the lens. Because the adapter lacks electronic contacts, exposure and autofocus functions controlled by the camera will not be available; aperture and focus must be adjusted on the lens itself or by using camera exposure modes that are compatible with manual lenses.

Usage recommendations

For best results, use lenses with full mechanical aperture rings or operate in camera modes that support manual-exposure workflows. When shooting handheld, use lens or body stabilization if available or mount the setup on a tripod to achieve precise focus. Check flange focal distance and focus infinity before critical shoots; some lenses may require calibration or confirmatory focusing to guarantee accurate infinity focus on MFT bodies.