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Simply put - take your Sigma lens off your Canon camera, attach it to this lens adapter and put it on your new Panasonic Lumix S1 or S1R. Couldn't be simpler...

Sigma Mount Converter MC-21 Canon EF to Panasonic S-Series Cameras


  • Lens Type: Converter / Adapter

Product code: 2002 (0085126937232)

Sigma Mount Converter MC-21 Canon EF to Panasonic S-Series Cameras


No used versions available

Product Details

  • EF-Mount Lens to L-Mount Body
  • Integrated LED Displays Compatibility
  • Maintains Autofocus and Auto-Exposure
  • Supports In-Camera Correction Features
  • Flocked Interior Reduces Reflections
  • Removable Tripod Mount
  • Retains EXIF Data

The SIGMA MOUNT CONVERTER MC-21 allows SIGMA’s CANON EF mount interchangeable lens owners to use their lens investment on L-Mount camera bodies. The converter allows more freedom of choice for L-Mount cameras, enhancing the extensibility of the L-Mount system.

Effective use of lens investment.

Attaching the MC-21 to your collection of SIGMA’s CANON EF mount compatible lenses* allows them to be used as L-Mount system lenses, promoting the effective use of valuable lenses already owned.

29 interchangeable lenses available to be used for L-Mount cameras

The MC-21 increases the number of interchangeable lenses manufactured by SIGMA that can be used with the L-Mount system by 29 lenses. Compatible with the autocrop function, mounting APS-C size image circle DC lenses to a camera body equipped with a 35mm full size sensor still allows immediate use for shooting.

35mm full-size

  • 12-24mm F4 DG HSM(Art)
  • 14-24mm F2.8 DG HSM | Art
  • 24-35mm F2 DG HSM | Art
  • 24-70mm F2.8 DG OS HSM | Art
  • 24-105mm F4 DG OS HSM | Art
  • 60-600mm F4.5-6.3 DG OS HSM | Sports
  • 70-20mm F2.8 DG OS HSM | Sports
  • 100-400mm F5-6.3 DG OS HSM| Contemporary
  • 120-300mm F2.8 DG OS HSM | Sports
  • 150-600mm F5-6.3 DG OS HSM | Contemporary
  • 150-600mm F5-6.3 DG OS HSM | Sports
  • 14mm F1.8 DG HSM | Art*
  • 20mm F1.4 DG HSM | Art*
  • 24mm F1.4 DG HSM | Art*
  • 28mm F1.4 DG HSM | Art*
  • 35mm F1.4 DG HSM | Art *
  • 50mm F1.4 DG HSM | Art*
  • 70mm F2.8 DG MACRO | Art*
  • 85mm F1.4 DG HSM | Art*
  • 105mm F1.4 DG HSM | Art*
  • 135mm F1.8 DG HSM | Art*
  • 500mm F4 DG OS HSM | Sports


  • 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary
  • 18-35mm F1.8 DC HSM | Art
  • 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary
  • 18-300mm F3.5-6.3 DC MACRO OS HSM | Contemporary
  • 50-100mm F1.8 DC HSM | Art
  • 30mm F1.4 DC HSM | Art

* The MC-21 is not necessary for native L-Mount lenses.

Note: Cannot be used in combination with teleconverter.

Simple Interface

Whether the mounted lens is compatible or not is instantly visible from the colour and the on/off of the MC-21’s built-in LED. The LED also notifies the user when a lens firmware update is available.

* The lens requires firmware update.

Lens data is preloaded

Running the data pre-loaded in the MC-21 for each lens by the special control program, autofocus and aperture control have been optimized. Regarding lenses to be released in the future, data for operating these lenses via the MC-21 will be stored in the lens. It means no firmware updates of the MC-21 will be required to use those new lenses. In addition, the MC-21 also supports correction functions of camera such as peripheral illumination, chromatic aberration of magnification, and distortion.

Fast and accurate auto focus

High precision AF photography in AF-S mode is achieved.

Comes with Tripod Socket

Equipped with a socket for attaching the tripod*. Lenses not equipped with a tripod socket can be used by mounting the tripod to the MC-21.

* The tool supplied makes attaching/detaching possible.

The inside surface of the barrel is covered with flocking to eliminate internal reflections

To prevent a reduction in lens performance due to internal reflections, the inside surface of the barrel is covered with flocking.

Inclusion in Exif data

Information such as lens type, focal length, F number, and other tags are embedded as Exif data in each image file.

Notice on the usage of the SIGMA Mount Converter MC-21 when it is used in combination with Panasonic’s LUMIX S1 and LUMIX S1R

  • Only AF-S works in Autofocus Mode. AF-C cannot be selected.
  • The Auto continuous operation cannot be used during video shooting.
  • Touch AF cannot be used.
  • With lenses incorporating MO (Manual Override), operation in manual mode is possible only after focusing.MF guide is not available.
  • The image stabilization function inside the camera body and the lens cannot be used simultaneously.
  • Please ensure one of these is selected.
  • The AF Function Button and the Focus Preset Button incorporated on some lenses cannot be used.

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