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Viltrox EF-FX1 Pro AF Adapter Ring

Viltrox EF-FX1 Pro AF Adapter Ring

3 total reviews

Boasting dynamic stabilization at the chip & algorithm level, 2.88" colorful touch display for instant settings and real-time video monitoring (when used with the Image Transmitter AI), Weebill 2 strives to create a better experience for filmmakers.

Regular price $178.00 USD
Regular price $178.00 USD Sale price $178.00 USD
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Auto Focus Adapter Ring

Suitable for Canon EF Lens to Fujiflm X-mount Cameras

EF Lens to X-mount Camera Adapter Ring

Auto Focus/Firmware Update/Lens IS

Lens to X-mount Camera Adapter Ring


EF-FX1 Pro Feature

Equipped with Aperture Adjustment Ring

The adapter ring is equipped with an aperture adjustment ring, which is the same as the Fuji lens adjustment method. The aperture value of the lens can be adjusted directly on the adapter ring.

Quickly Detect and Accurately Focus

Reduce Focal Length, Increase Aperture

Built-in 4 groups, 4pcs optical glasses,which helps enlarge
level aperture and makes the shooting range wider

Support EXIF Info Transmission

Built-in metal electronic contacts and data chips can record photo information and shooting data.Support camera body to adjust aperture, shutter, exposure compensation, etc

Support Lens Stabilization

Built-in metal electronic contacts and data chip and support the lens stabilization, which effectively eliminates image ghosting and blurring caused by sports shooting or shaking when holding

Unremitting Pursuit Detail Design

Parts Identification

Which is the Best for You?
Adapter Ring Feature EF-FX1 EF-FX2 EF-FX1 PRO
Campatible with EF Lens YES YES YES
Campatible with EF-S Lens YES NO YES
Auto focus YES YES YES
Aperture ring NO NO YES
Speed booster NO YES NO
Support lens IS YES YES YES
Firmware update Micro USB Micro USB Type-C

Customer Reviews

Based on 3 reviews
Firmware hell

I had to go back to firmware version 2.14 to find a minimally useful auto focus build. That is 7 versions back! And it still is very hit or miss. Using with Fuji X-S10.

Will Crabtree
Great for aperature adjustment, not so much for AF on X-S10

The adapter works great for adjusting F-stop but on my X-S10, theres many issues with the auto focus system. Hopefully a firmware update can fix it. Im sure this works great with other fuji cameras. wonderful build quality.

fabio tavalla
incompatibility with fuji x-s10

several autofocus problems with sigma 18-200 (canon EF) and fuji x-s10.