Sigma · 2 adapters
Sigma camera lens adapters
Sigma — the largest third-party SLR / mirrorless lens maker — built its adapter line to put its own Global Vision Art / Sports / Contemporary EF and SA lenses onto the dominant mirrorless mounts. The MC-11 (2016, EF → Sony E) and MC-21 (2019, EF → L-Mount Alliance) are both firmware-updatable via the Sigma USB Dock on the lens side. Reputation: native-like AF performance with Sigma-brand EF glass; Canon-brand EF lens compatibility is curated on Sigma's published per-lens chart and grew through firmware revisions v1.10–v1.40.
Every Sigma 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.
Sigma's bridge from Canon EF + Sigma SA into the L-Mount Alliance ecosystem (Leica SL / CL, Panasonic Lumix S, Sigma fp).
firmware-updatableExcellent native-like AF performance with Sigma's own EF Art and Sports lenses; Canon-brand EF lens support varies by model.
firmware-updatable
Common questions
- Is the Sigma MC-11 still being updated?
- Yes — Sigma issued firmware v1.40 in 2020 and continues to ship occasional revisions tied to new Sony E body generations. The compatibility chart is published per-lens at sigma-global.com, and updates flow through the Sigma USB Dock attached to the EF lens (the adapter itself takes its firmware from the lens during mounting). Don't expect monthly cadence — releases are body-driven, sometimes 18 months apart.
- Does the Sigma MC-11 work with Canon-brand EF lenses or only Sigma?
- Both, but with different confidence levels. Sigma's own Global Vision Art / Sports / Contemporary EF lenses (24 mm Art, 35 mm Art, 50 mm Art, 85 mm Art, 70-200 Sports, 150-600 Sports / Contemporary, etc.) get native-like AF — they're explicitly tuned for the MC-11. Canon-brand EF lens compatibility is on Sigma's curated chart: USM and STM lenses generally work, micromotor-driven older EF zooms are slower and less consistent, and a small set (early 17-40 L, original 28-70 L) have AF quirks. Tamron and pre-2016 Sigma DC / DG are unsupported.
- What's the difference between Sigma MC-11 and MC-21?
- Destination mount. MC-11 (2016) targets Sony E bodies; MC-21 (2019) targets L-Mount Alliance bodies (Panasonic S1 / S5 / S5 II / S9, Leica SL2 / SL3, Sigma fp / fp L). Internally similar — same approach (firmware-updatable via lens-side USB Dock, same Sigma-glass-first compatibility tier) — different electrical / mechanical interface on the body side. If you own both Sony FE and L-Mount bodies, you need both adapters.
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