Metabones Canon EF to Micro Four Thirds Speed Booster S
Got this camera?
Sell it with us.
Free appraisal in 24 h, payment in 48 h and free shipping. We inspect it, refurbish it and give it a second life.
Inspected at 28 points by our technicians. Every unit is unique. More details
Subscribe and save on your order
Get a discount code by email.
Thanks for subscribing.
Use the code at checkout:
CAMERAMARKET10
Protect your purchase for longer.
Your camera ships with 6 months of coverage included. Extend it if you want professional photographer peace of mind.
Units sold for parts do not qualify for extended warranty.
View warranty terms and conditionsThe Metabones Speed Booster S for Canon EF lenses on Micro Four Thirds cameras is a second-hand mount adapter that lets you mount Canon EF lenses on your active MFT camera, such as the Olympus OM-D, Panasonic GH4, or Blackmagic Pocket Cinema Camera. This model (MB_SPEF-m43-BM2) is specifically designed for cameras with an active MFT mount and is not compatible with passive mounts like the BMCC 2.5K.
Weighing only 158.76 grams, this adapter maintains the portability of your gear. As a second-hand product, it has been inspected and comes with a Camera Market warranty (6, 12, or 24 months), giving you peace of mind with your purchase. For exact technical specifications, such as focal length reduction or maximum aperture, we recommend checking the manufacturer's datasheet.
Read more Read less
The Metabones Canon EF to Micro Four Thirds Speed Booster S is an optical adapter designed to mount Canon EF mount lenses on Micro Four Thirds (MFT) system cameras. This model, identified as MB_SPEF-m43-BM2, incorporates a lens group that reduces the focal length by 0.71x and increases the maximum aperture by one stop, offering a wider field of view and better performance in low-light conditions. It is exclusively compatible with active mount MFT cameras, such as the Olympus OM-D, Panasonic GH4, or Blackmagic Pocket Cinema Camera.
Key Features
- Optical adapter with a 0.71x focal multiplier for Canon EF/EF-S lenses.
- Increases the maximum aperture by approximately 1 stop (e.g., f/2.8 becomes f/2).
- Metal construction with nickel-plated brass mount for enhanced durability.
- Requires an active MFT mount with electronic support for aperture and focus control.
- Includes a detachable lens hood and rear cap; not compatible with MFT cameras lacking electronic contacts.
Ideal For
Photographers and videographers looking to use Canon EF lenses on Micro Four Thirds bodies, gaining brightness and a field of view closer to the original. Perfect for users of cameras such as the Panasonic GH5, Olympus OM-D E-M1, or Blackmagic Pocket Cinema Camera 4K.
Condition
Second-hand product inspected by Camera Market. Includes a standard 6-month warranty and 24-48h shipping from Barcelona.
Is it compatible with all Micro Four Thirds cameras?
No, this adapter is only compatible with active mount MFT cameras, such as the Olympus OM-D, Panasonic GH4, and Blackmagic Pocket Cinema Camera. It will not work with passive mount cameras like the BMCC 2.5K.
What type of lenses can I use with this adapter?
You can mount Canon EF lenses on your Micro Four Thirds camera. It is ideal for expanding your lens collection without changing systems.
Does this adapter affect image quality?
The Speed Booster S is designed to maintain optical quality, but results may vary depending on the lens and camera. For technical details, consult the manufacturer's datasheet.
Does it include a warranty?
Yes, as a second-hand product from Camera Market, it includes a 6, 12, or 24-month warranty, in addition to having passed a technical inspection.
Full condition scale
Each unit is inspected at 28 points and graded honestly. Here's how we translate each level so you know what to expect:
Barely any signs of use. Almost flawless aesthetics and perfect operation.
Light marks from normal use. Optically clean and fully functional.
Visible signs of use (scuffs, marks, brassing). Works perfectly.
Not guaranteed for use: sold for parts or repair.
Why buy used?
Depreciation is already absorbed: the same gear for much less than new.
Many classics and discontinued gems only exist today on the used market.
28-point inspection and 6-month warranty included on every unit.
Extending the life of a camera avoids manufacturing and transporting a new one.
