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Head-to-head · Canon EF → Sony E

Sigma MC-11 vs Metabones EF-E V — which EF-on-Sony adapter to buy

Both adapt Canon EF lenses onto Sony E-mount bodies with phase-detect AF, IS pass-through, and electronic aperture. The choice usually comes down to which EF lens lineage dominates your bag — Sigma's own Art / Sports / Contemporary glass, or Canon-brand L USM zooms and Tamron G2 primes.

Side-by-side specifications

SpecSigma MC-11
Sigma · 2016
Metabones EF-E Mark V
Metabones · 2017
Lens sideCanon EFCanon EF
Body sideSony ESony E
Release year20162017
Body-side contacts9 pins11 pins
Firmware-updatableYesYes
Weather-sealedNoNo
Has glass (focal reducer)NoNo

Differences that matter

Certified-lens depth is the headline split. Sigma MC-11 is deepest for Sigma's Global Vision EF lineup (24-70 f/2.8 Art, 35 f/1.4 Art, 150-600 Contemporary) — Sigma publishes per-lens AF tuning and pushes it via the MC-11's own firmware track (v1.10 → v1.40 added the bulk of the chart). Metabones EF-E Mark V casts a wider net: Canon L USM zooms, Tamron G2, Sigma — all live on the same per-revision chart Metabones publishes alongside each release.

Continuous-AF tracking on PDAF Sony bodies (a7 III / a7 IV / a7R V / a1 / a9 II / FX-line) is broadly comparable on modern firmware — both deliver native-like single-shot AF and serviceable subject tracking. Metabones edged ahead first with v0.69 / v0.79 a1 + a7s III tuning; Sigma followed with the v1.20 / v1.30 PDAF tracking pass. Neither matches native FE on fast-moving subjects, but for portrait / event / static-wildlife both are reliable.

Firmware update flow differs in a practical way. Metabones updates over a side-mount micro-USB port — adapter alone, no body or lens needed. Sigma MC-11 requires the Sigma USB Dock (the same accessory Sigma sells for their lenses) and Sigma Optimization Pro on Windows / macOS. Both add lens-compat additions roughly twice per year; cadence is similar.

Build differs in subtle ways. Both lack weather sealing. Metabones is the older design (Mark V dates to 2017); Sigma MC-11 (2016) was Sigma's first foray into the category and is correspondingly less polished in tripod-foot ergonomics. Neither has a tripod foot — heavy 100-400 / 150-600 zooms must be supported by the lens collar.

When to pick which

Pick the

Sigma MC-11 when

  • Your EF kit is Sigma Global Vision (24-70 / 35 Art / 50 Art / 85 Art / 105 Art / 150-600 Contemporary). The MC-11's per-lens tuning was authored by the same team that designed the lenses.
  • You already own a Sigma USB Dock for your Sigma lenses — the MC-11 plugs into the same accessory.
  • Budget-sensitive: MC-11 typically lists ~20% cheaper than the Metabones EF-E V at retail and second-hand.

Pick the

Metabones EF-E Mark V when

  • Your EF kit is Canon L USM zooms (24-70 II, 70-200 III, 100-400 II) and primes (35 II, 85 1.4 IS). Metabones' chart covers more Canon-brand lens behaviour explicitly.
  • You shoot Tamron G2 lenses (28-75 G2, 70-200 G2). Metabones added Tamron G2 entries in v0.69 firmware; Sigma's MC-11 never officially certified them.
  • You want side-USB firmware updates without buying a separate dock — Metabones updates over the adapter's own micro-USB port.

Common questions

Is the Sigma MC-11 faster than the Metabones EF-E V at autofocus?
Comparable on most modern EF lenses with current firmware. Both run native-like single-shot AF on PDAF Sony bodies; both lag native FE on fast-moving subjects. Differences within ~5-10% in side-by-side tests come down to specific lens + body combinations, not adapter design.
Can I use the MC-11 with Canon EF lenses or only Sigma's?
Both — Sigma added Canon-brand EF lens compatibility in v1.30 firmware as a curated chart. Most Canon L USM zooms focus reliably for single-shot; continuous tracking is workable but lags native Sony FE noticeably. For a Canon-EF-heavy bag, the Metabones EF-E V's broader Canon coverage is usually the safer pick.
Do both adapters preserve Canon EF lens IS on Sony bodies?
Yes — IS commands pass through unchanged to the EF lens's built-in IS unit on both adapters. Combined with Sony body IBIS (a7 III and later), the dual-stabilisation pairing works as on a native FE lens.
Which adapter has better build quality?
Both are solid metal with no weather sealing. Metabones has a slightly more refined feel; Sigma's MC-11 is a touch chunkier. Neither has a tripod foot — heavy long EF lenses should mount via their own tripod collar on either adapter.

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