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  1. LUMIX Lenses
  2. LUMIX S Full Frame Lenses

Sigma MC-21 Mount Converter

The SIGMA MC-21 mount converter allows you more freedom of choice for L-Mount cameras from SIGMA, Leica Camera and Panasonic, if you own compatible lenses for the Canon EF mount.

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Attaching the MC-21 converter to Canon EF mount lenses allows them to be used as L-Mount system lenses, enhancing the extensibility of the L-Mount system and compatible camera models.

Fast and accurate auto focus:

The SIGMA Canon EF to L Mount converter offers fast and precise autofocus capabilities, enabling high-precision AF photography in AF-S mode for sharp and clear images. However, please note that it is not compatible with AF-C mode.

Lens data is pre-loaded:

By running the data pre-loaded in the MC-21 for each lens via a special control program, autofocus and aperture control have already been optimised. For upcoming lens releases, data will be stored within the lens itself, eliminating the need for MC-21 firmware updates. Moreover, the MC-21 converter provides support for camera correction functions like peripheral illumination, chromatic aberration of magnification, and distortion.

Tripod mount:

This mount converter comes equipped with a socket for attaching a tripod. Lenses not equipped with a tripod socket can be used by mounting the tripod to the MC-21 converter.

Inside flocking:

To ensure optimal lens performance and prevent any degradation caused by internal reflections, the inside surface of the converter's barrel is coated with flocking material. This flocking effectively absorbs stray light, enhancing image quality and reducing unwanted glare or flares in your photographs.

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.


Lens Adapting

Description Quantity
Back Cap1
Front Cap1
Monopod Mount1
Main unit1
D-Res 20AW case1

When the MC-21 converter is used in combination with Panasonic L-Mount cameras, please take the following into consideration:

  • Please check that the firmware of the MC-21 and the camera are updated to the latest version.
  • 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.
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