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Commlite · Canon EF → Sony E adapter

Commlite CM-EF-NEX HS — Canon EF → Sony E adapter

Second-generation Commlite EF-on-Sony adapter with USB-C firmware port and on-sensor PDAF support — sits between Fotodiox (no firmware, contrast-detect biased) and Sigma MC-11 / Metabones EF-E V (broader certified per-lens charts) on the price-to-AF curve.

At a glance

Vendor
Commlite
Release year
2018
Body-side contacts
9 pins
Flags
firmware-updatableweather-sealed —requires glass —

What this adapter preserves

Compatibility for Canon EF lens on a Sony E body (computed from the lensmount dataset — open the Canon EF to Sony E adapter page for the full verdict, flange clearance, and adapter caveats).

  • Focus: Full AF
  • IS: IS / IBIS preserved
  • Aperture: Electronic aperture
  • Infinity focus: Reaches infinity

What it does

AF is reliable for single-shot static work on Canon USM / STM EF lenses on Sony PDAF bodies; continuous tracking lags Sigma / Metabones on fast subjects.

Updates ~twice a year via the USB-C port; cadence is slower than Sigma / Metabones / Megadap. Value pick when the budget excludes the leaders and Viltrox EF-NEX IV stock is unavailable.

Firmware history

Firmware history

  1. v1.0
    • Initial high-speed (HS) release — second-generation Commlite EF-NEX with USB-C firmware port
    • Phase-detect AF on Sony a7 III / a6500 / a9
  2. v2.0
    • a7 IV / a7R V / a1 PDAF rule alignment
    • Sigma Global Vision EF lens compatibility additions

Approximate milestones — verify against the Commlite firmware page for the authoritative changelog.

Common questions

Is the Commlite CM-EF-NEX HS still receiving firmware updates?
Yes — Commlite continues to release firmware updates roughly twice per year, with v2.0 (2021) the most significant recent revision (a7 IV / a7R V / a1 PDAF rule alignment, Sigma Art compatibility additions). Cadence is slower than Sigma / Metabones / Megadap, which publish updates 3-6 times per year. If your body is more than ~18 months newer than the most recent Commlite update, expect potential AF quirks until the next release lands.
How does it compare to Viltrox EF-NEX IV?
Comparable tier of AF preservation — both are value picks between Fotodiox at the bottom and Sigma / Metabones at the top. Viltrox EF-NEX IV has a marginally smoother continuous-AF feel on EF L USM zooms in side-by-side tests; Commlite costs slightly less. Both update over USB-C, both lack weather sealing. For a casual single-shot or portrait kit either works; for tracking AF, step up to Sigma MC-11.
Does it preserve image stabilisation on EF IS lenses?
Yes — IS commands forward through the adapter to the lens's built-in IS unit. Combined with Sony body IBIS (on A7 III / A7 IV / A7R V / A1 / FX-line), the dual-stabilisation pairing works as expected on EF L IS lenses. EXIF lens identification and electronic aperture pass through correctly.

Mounts on either side

Lens side

Canon EF

Flange 44 mm · Canon

Open mount page →

Body side

Sony E (incl. FE)

Flange 18 mm · Sony

Open mount page →

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Same lens-side mount (Canon EF)

Same body-side mount (Sony E)

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