Viltrox EF-R2 Adapter for Canon EF/EF-S Lens to Canon RF-Mount with Integrated USB Port Review

The Viltrox EF-R2 is a lens adapter that lets Canon RF-mount shooters use their existing EF and EF-S lenses. At $72, it sits in the budget tier of the adapter market, well below Canon's own offerings. The standout feature here is the integrated USB port, which allows for firmware updates without removing the adapter from the camera, a convenience that can simplify maintenance over time.

As a third-party option, the EF-R2 offers autofocus and electronic aperture control, making it a functional bridge for creators transitioning to RF-mount bodies or those who want to maximize their glass collection. Build quality and communication speed are typically the differentiators in this category, and Viltrox has positioned this adapter as a cost-conscious alternative. For creators who shoot video or stills with adapted glass and want a straightforward, upgradeable solution, the EF-R2 delivers the basics without the premium price tag.