Sigma Mount Converter MC-11, Sigma SA-E to SA Mount, Increases Lens Compatibility

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SIG89S965
$279.00
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Key Features
  • Supports Sigma SA and Canon EF lenses: Mount SA or EF lenses directly to Sony E, no mechanical mods.
  • Fast Hybrid AF compatibility: Enables phase/contrast hybrid autofocus on supported Sony bodies.
  • Electronic aperture and exposure control: Maintains automatic exposure and aperture control on Sony E bodies.
  • Retains Optical Stabilization: Leaves lens or body stabilization functioning for steadier shots.
  • Flocked interior barrel: Reduces stray light, improving contrast and preventing flare.
  • Upgradeable firmware via USB: Add new lens compatibility and improvements with Sigma Optimization Pro.
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Sigma Mount Converter MC-11, Sigma SA-E to SA Mount, Increases Lens Compatibility Overview

Description

The Sigma MC-11 Mount Converter lets photographers and videographers mount Sigma SA or Canon EF lenses on Sony E-mount mirrorless cameras while retaining electronic aperture control, stabilization, and EXIF data. It keeps your existing lens investments useful after switching to Sony, enabling fast hybrid autofocus on compatible bodies and contrast-detect fallback otherwise.

Product Paragraph 2: Built with a flocked interior to minimize internal reflections, an LED compatibility indicator, and USB firmware updateability via Sigma Optimization Pro, the MC-11 offers a durable, futureproof bridge between legacy DSLR glass and modern Sony mirrorless systems, delivering practical performance for hybrid shooters, rental houses, and professionals migrating systems.

Applications

  • Transition from DSLR to Sony mirrorless while retaining EF/SA lenses
  • Hybrid photographers and videographers using legacy cinema or EF glass on Sony bodies
  • Rental houses and pros needing mount flexibility without repurchasing lenses

Why Choose the Sigma MC-11

OEM-grade adapter with Sigma's compatibility database and LED indicator, enabling reliable autofocus, electronic control, and firmware updates for expanding lens support.

Specifications
Model / Variant MOUNT CONVERTER MC-11 (for Sony E-mount)
Product Type Lens Mount Converter, Adapter
Category / Sub-Category Camera Accessory, Lens Mount Converter
Weight 125 g
Mount / Interface Input: Sigma SA, Canon EF, Output: Sony E-mount
Electronic Features Autofocus pass-through, electronic aperture, EXIF data transmission, OS pass-through
Interior Finish Flocked inner barrel to reduce internal reflections
Firmware USB updatable via Sigma Optimization Pro
Compatibility Indicator LED status indicator shows compatibility and firmware status
Included Items Adapter, front cap, rear cap, USB cable for firmware updates
Brand Sigma
Manufacturer SKU 89S965
UPC 85126932510
What’s included
  • 1- Mount Converter MC-11,Sigma SA-E to SA-Mount
  • 1- Front and Rear Caps
  • 1- USB Cable
Compatibility
Sony A7 Sony A7 II / A7 III Sony A7R series Sony A9 / A9 II Sony A6000 series
Sony A7 IV Sony FX3 Sony FX30 Sony PXW-FS5 / FS5 II Sony PXW-FS7 / FS7 II
Sigma SA-mount lenses Canon EF lenses Sigma Art EF series Canon EF L-series Partial support for Tokina EF-mount
FAQ

Does the Sigma MC-11 support autofocus?

Yes, the MC-11 supports Fast Hybrid AF on compatible Sony bodies and falls back to contrast-detect AF on unsupported models, preserving autofocus functionality for many lenses.

Which lens mounts can I attach to the MC-11?

The MC-11 accepts Sigma SA-mount and Canon EF-mount lenses, adapting them to Sony E-mount camera bodies.

Will stabilization still work with my lenses?

Yes, optical stabilization will be retained when the lens or camera body supports OS, enabling stabilized shooting after adaptation.

Does the adapter pass EXIF and lens data?

Yes, the MC-11 transmits lens type, focal length, F-number and other EXIF metadata to the camera for proper recording and workflow integration.

How do I update the adapter firmware?

Firmware updates are applied via USB using Sigma Optimization Pro on a PC, allowing compatibility updates for newly supported lenses.

Will all Canon EF lenses work perfectly?

Most Canon EF lenses will function, including autofocus and stabilization where supported, but some combinations may show limited AF performance; check Sigma compatibility resources for specifics.

Is there a compatibility indicator on the MC-11?

Yes, an LED indicator on the adapter displays compatibility status and whether a firmware update is recommended.

Can I use the MC-11 for video work?

Yes, many videographers use the MC-11 to pair EF cinema lenses or Sigma glass with Sony mirrorless bodies for video, with electronic aperture control and stabilization retained where available.

Is the adapter bulky or heavy?

No, the MC-11 is compact and lightweight at approximately 125 g, keeping overall rig weight low when mounted between lens and camera.

What should I do if a lens shows limited support?

Check for a firmware update for the MC-11 via Sigma Optimization Pro, and consult Sigma's published compatibility notes for recommended pairings.

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