Viltrox · 3 adapters
Viltrox camera lens adapters
Viltrox is a Chinese third-party maker known for budget AF-capable EF adapters with USB-C firmware updates — a feature uncommon at its price point. The EF-NEX IV (2018, EF → Sony E) and EF-EOS R5 (2024, EF → Canon RF) are its headline SKUs. AF performance is workable for static subjects on most modern EF and Sigma DG lenses; tracking lags behind Sigma's MC-11 and Metabones' EF-E V, but at substantially lower cost — Viltrox sits between Fotodiox and Sigma on the price-versus-AF curve.
Every Viltrox adapter we track
Sorted newest first. Open any row for the full per-SKU compatibility page — what the adapter preserves (AF / IS / aperture / infinity focus), firmware history, mount-side cross-links, and sibling adapters worth comparing.
Third-party alternative to Canon's official EF-EOS R; significantly cheaper, similar AF behaviour on most EF lenses.
firmware-updatableEF-M2 II
Canon EF → Micro Four Thirds · 2018 · 11 pins
0.71× focal-reducer ('speed booster') for Canon EF / EF-S glass on Micro Four Thirds bodies — recovers roughly one stop of light and widens the field of view, pulling the effective crop from the bare 2.0× MFT factor toward ~1.42×.
firmware-updatablerequires glassBudget EF-on-Sony adapter with electronic communication and firmware-updatable AF support.
firmware-updatable
Common questions
- Is the Viltrox EF-NEX IV still being made?
- Yes — Viltrox keeps the EF-NEX IV (2018) in active production alongside its newer EF-EOS R5. The EF-NEX IV remains the budget go-to for EF lenses on Sony E bodies; Viltrox still ships firmware updates over its USB-C port, most recently for compatibility with newer Sony A7 IV / A7R V / A1 PDAF rules. AF reliability sits below Sigma MC-11 / Metabones EF-E V but ahead of Fotodiox, which is exactly its price-point tradeoff.
- How does the Viltrox EF-EOS R5 compare to Canon's official EF-EOS R?
- Functionally close on USM and STM EF lenses — both preserve AF, IS, and electronic aperture on every Canon EF / EF-S lens. Differences: Canon's adapter is weather-sealed, the Viltrox is not (typical of budget third-parties); Canon ships in three variants (plain / Control Ring / Drop-In Filter), Viltrox only ships a plain variant. The Viltrox costs ~40% less and is firmware-updatable via USB-C — a useful safety net Canon's first-party adapter doesn't have. For weather-sealed RF body / EF L super-tele combinations, get the Canon; for everyday use the Viltrox saves $80-100.
- Is Viltrox firmware update via USB-C reliable?
- Generally yes — Viltrox publishes firmware tools for both macOS and Windows on viltroxstore.com, with version notes. The flashing process is standard (connect adapter via USB-C, run tool, ~30 seconds). Reported issues centre on rushed power loss during flashing (the usual brick risk for any firmware update); don't unplug during the progress bar. Updates land roughly every 6-9 months, slower than Sony / Canon body firmware cadence but enough to keep adapter behaviour aligned with new body generations.
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