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Sigma MC 21 Mount Converter Lens Adapter

Key Features
  • 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


Sigma Lens

Sigma MC21 Lens Adapter The Sigma MC21 Lens Adapter is Specifically engineered to adapt Sigma EF-mount lenses for use with L-Mount cameras. It enables you to mount Sigma EF lenses on L-Mount mirrorless cameras.

Lens Compatibility:

The adapter primarily supports Sigma EF-mount lenses, offering a wide range of lens options for L-mount camera users. However, full compatibility and autofocus performance can vary depending on the lens model and camera used.

Autofocus Functionality:

The MC-21 adapter is Designed to maintain autofocus functionality with adapted lenses. However, the speed and performance of autofocus may vary based on the lens and camera combination.

Exif Data Transmission:

The adapter allows transmitting Exif data between the lens and the L-Mount camera, providing information such as aperture setting, focal length, and other metadata.

Firmware Updates:

Sigma may release firmware updates for the MC-21 to enhance compatibility with specific lenses and improve overall performance. Users can update the firmware using Sigma’s USB Dock.

Electronic Communication:

The adapter facilitates electronic communication between the lens and the camera, enabling features such as aperture control from the camera body.

Compact Design:

The MC-21 adapter is Designed to be compact and lightweight, ensuring portability and convenience for photographers who want to adapt their Sigma EF lenses to L-Mount cameras.

Compatibility Verification:

Some versions of the MC-21 adapter feature a button that allows users to verify compatibility with specific Sigma EF lenses before mounting them on the L-Mount camera.

Tripod Mount:

The adapter may include a tripod mount to provide additional support and balance when using larger or heavier lenses.

Construction Quality:

The MC-21 adapter is constructed with durable materials to ensure longevity and reliability in various shooting conditions.

Camera Mount
Leica L
Lens Mount
Canon EF
Tripod Mounting Thread
1/4″-20 Female
Packaging Info
Package Weight
0.7 lb
Box Dimensions (LxWxH)
7 x 4.5 x 2.5″


Sigma Lens

  • Foto Crown: Unlocking Creativity: Exploring the World of Sigma Lens
Sigma lenses have earned a reputation for delivering exceptional optical performance, innovation, and value for photographers and videographers worldwide. In this article,
  • History and Legacy of Sigma
Since its founding in 1961, Sigma has established itself as a leading manufacturer of high-quality lenses and photographic equipment.
  • Sigma's Commitment to Innovation
Sigma's relentless pursuit of innovation is evident in its groundbreaking lens designs and technologies.
  • Sigma Lens Technology
  • Optical Design
Sigma lenses are renowned for their exceptional optical quality, thanks to advanced lens elements, coatings, and precision engineering.
  • Autofocus Systems
Sigma incorporates cutting-edge autofocus systems into its lenses, ensuring fast, accurate, and silent focusing performance.
  • Image Stabilization
Foto Crown Many Sigma lenses feature built-in image stabilization technology, providing photographers and videographers with greater flexibility and confidence in challenging shooting conditions.
  • Range of Sigma Lenses
Sigma offers a diverse range of lenses to suit various shooting styles and preferences.
Sigma Lens

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