Product Highlights
  • Canon EF Lens to MFT Camera Adapter
  • Focal Reducer Speed Booster
Viltrox Speed Booster Canon EF Lens to M4/3 Series Cameras Viltrox Speed Booster Canon EF Lens to...
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EF-M2 II | Mount Adapter

Focal Reducer Speed Booster Adapter for Canon EF Mount Series Lens to M43 Camera. Designed to allow Canon EF-mount series lens to be used on M43 camera.

Key Features:

  • 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(autofocus) and adjustable aperture,etc.
  • Gold-plated electronic contact, Auto-focus function
  • It can realize AF,adjustable aperture from camera body to lens's aperture
  • More durable metal material
  • Compatible for all the EF-lens

Auto Focus

With the gold-plating contact, which can help to connect your Canon EF mount series lens to M4/3 Cameras, auto focusing perfectly.

Enlarge aperture ,reduce focus length

Designed with internal aperture motor, you can adjust the aperture from camera end directly to control the lens’ actual aperture.

USB Firmware Upgrade

Equipped with USB interface, can realize software upgrade. Can perfect new functions of the lens mount adapter and fix bugs according to follow-up upgrades.


Product Specifications


Compatible lenses Canon EF series lenses
Compatible cameras M43 series cameras
Focus mode Auto focus
Focal Lenth Multiplier 0.71x
Optical glasses 4 groups, 4 glasses
Tripod Socket Cu1/4"× 1
Diameter and Length Φ67mm×25mm.
Weight Approx. 85 g (excluding cap).
Front cap Camera cover
Rear cap Lens Dust cap

Questions & Answers

Viltrox Speed Booster Canon EF Lens to M4/3 Series Cameras

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