A new device that expands the possibilities of lenses,
making them more valuable than ever.

The new MOUNT CONVERTER MC-11 allows you to use your SIGMA SA mount and SIGMA EOS mount interchangeable lenses with the Sony E-mount camera body.
Until now, the market has seen the introduction of many methods for using lenses from one camera system with a body from a different system. In the digital age, however, camera systems have become much more complex, and it is challenging to create a mount converter that aligns both the mechanics and software of the lens and body. Creating a converter that matches lenses for current DSLRs to bodies for mirrorless interchangeable-lens camera systems is even more challenging. Now the market demands a converter that goes beyond simply aligning the flange back distance to retaining full functionality.
MOUNT CONVERTER MC-11 incorporates the digital data necessary to provide fast and smooth AF for compatible lenses as well as OS features and functions of the camera that help control peripheral brightness and correct transverse chromatic aberration, distortion, and more.
In addition, since Sony E-mount camera bodies do not require mechanical integration with lenses for aperture control, the MOUNT CONVERTER MC-11 makes SIGMA SA mount interchangeable lenses and SIGMA interchangeable lenses for Canon cameras fully compatible with the automatic exposure control of Sony E-mount camera bodies.

MOUNT CONVERTER MC-11 is ideal for professional photographers who use different camera systems depending on the subject, as well as amateur photographers who enjoy using a variety of camera systems. Increasing the compatibility of lenses with different camera systems makes these assets more valuable than ever. In addition, users of Sony E-mount camera bodies will enjoy an immediate increase in the number of lenses available to them.


Corresponding AF mounts: Canon EF-E*1, SIGMA SA-E

Note: The appearance and specifications are subject to change without notice.
*1 SIGMA EOS Mount

More flexible use of valuable lens assets

With the MOUNT CONVERTER MC-11, users of SIGMA SA mount interchangeable lenses and SIGMA EOS mount interchangeable lenses for Canon camera bodies* can use them as is with Sony E-mount camera systems. Users of multiple mounts will enjoy more flexible use of their valuable lens assets.
* Please see lens compatibility chart below

36 interchangeable SIGMA lenses available*
for Sony E-mount camera bodies

The MOUNT CONVERTER MC-11 gives Sony E-mount camera body users access to a total of 36 SIGMA interchangeable lenses. Thanks to compatibility with auto-image area setting functionality, SIGMA DC lenses for APS-C sensors can be used with camera bodies with full-size sensors without the need for any special operation.
Compatible SIGMA DC lenses can therefore be freely used with Sony E-mount camera bodies.


α9 series
α7 series
α5000/α6000 series
NEX series


35mm full-size

  • 12-24mm F4 DG HSM(Art)
  • 14-24mm F2.8 DG DN(Art)*1
  • 14-24mm F2.8 DG HSM(Art)
  • 24-35mm F2 DG HSM(Art)
  • 24-70mm F2.8 DG DN(Art)*1
  • 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)
  • 70-200mm F2.8 DG OS HSM(Sports)
  • 100-400mm F5-6.3 DG DN OS(Contemporary)*1
  • 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)*2
  • 20mm F1.4 DG HSM(Art)*2
  • 24mm F1.4 DG HSM(Art)*2
  • 28mm F1.4 DG HSM(Art)*2
  • 35mm F1.2 DG DN(Art)*1
  • 35mm F1.4 DG HSM(Art)*2
  • 40mm F1.4 DG HSM(Art)*2
  • 45mm F2.8 DG DN(Contemporary)*1
  • 50mm F1.4 DG HSM(Art)*2
  • 70mm F2.8 DG MACRO(Art)*2
  • 85mm F1.4 DG HSM(Art)*2
  • 105mm F1.4 DG HSM(Art)*2
  • 135mm F1.8 DG HSM(Art)*2
  • 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)
  • 16mm F1.4 DC DN(Contemporary)*1
  • 30mm F1.4 DC DN(Contemporary)*1
  • 56mm F1.4 DC DN(Contemporary)*1
* Including unreleased products.
* MOUNT CONVERTER MC-11 is not compatible with teleconverters
* Accurate operation is not guaranteed with lenses not listed as compatible
*1 MC-11 is not required.
*2 For Sony E-mount, MC-11 is not required.

Fast and smooth autofocus performance

When used with a camera body that is compatible with Fast Hybrid AF, AF-S mode delivers extremely fast and smooth autofocus performance. With other camera bodies, contrast detection AF offers very high-precision autofocusing.*
* Please see lens compatibility chart below

Lens compatibility chart

Art DC 30mm F1.4 DC HSM
DC 18-35mm F1.8 DC HSM
DC 50-100mm F1.8 DC HSM
DG 14mm F1.8 DG HSM
DG 20mm F1.4 DG HSM
DG 24mm F1.4 DG HSM
DG 28mm F1.4 DG HSM
DG 35mm F1.4 DG HSM
DG 40mm F1.4 DG HSM
DG 50mm F1.4 DG HSM
DG 70mm F2.8 DG MACRO
DG 85mm F1.4 DG HSM
DG 105mm F1.4 DG HSM
DG 135mm F1.8 DG HSM
DG 12-24mm F4 DG HSM
DG 14-24mm F2.8 DG HSM
DG 24-35mm F2 DG HSM
DG 24-70mm F2.8 DG OS HSM
DG 24-105mm F4 DG OS HSM
Contemporary DC 17-70mm F2.8-4 DC MACRO OS HSM
DC 18-200mm F3.5-6.3 DC MACRO OS HSM
DC 18-300mm F3.5-6.3 DC MACRO OS HSM
DG 100-400mm F5-6.3 DG OS HSM
DG 150-600mm F5-6.3 DG OS HSM
Sports DG 60-600mm F4.5-6.3 DG OS HSM
DG 70-200mm F2.8 DG OS HSM
DG 120-300mm F2.8 DG OS HSM
DG 150-600mm F5-6.3 DG OS HSM
DG 500mm F4 DG OS HSM
* Including unreleased products.
* Not compatible with AFC or AFA
* Not compatible with DMF in certain lenses
* For use with DMF (in compatible lenses), it is necessary to change applicable settings with the SIGMA USB DOCK (sold separately)
* Video capture requires the use of MF

Easy-to-use interface

Green light:
the lens is compatible.
Blinking green light:
the lens firmware needs to be updated using the SIGMA USB DOCK.
Blinking orange light:
the lens is compatible but the MC-11 requires an update to retrieve new lens data.
Not lighting up:
the lens is not compatible

The LED display on the MOUNT CONVERTER MC-11 makes it easy to know whether an attached lens is compatible or not and whether the mount converter control data needs to be updated for operation with that lens.

Includes necessary data

MOUNT CONVERTER MC-11 incorporates the data necessary for each compatible lens and uses a dedicated control program to optimize AF drive, aperture control, and other functions. It is compatible with functions of the camera that maintain peripheral brightness and correct transverse chromatic aberration, distortion, and more. As new compatible lenses are released, control data for MOUNT CONVERTER MC-11 can be updated via a personal computer.
Note: Lens data updates require the installation of the latest version of SIGMA Optimization Pro on your personal computer.

Other features

Compatible with optical stabilization features of both lens and camera body

The compatibility of MOUNT CONVERTER MC-11 with the OS features of both the lens and the camera body makes possible superior correction of camera shake and other stability issues. When used with a camera body that features an OS function, MOUNT CONVERTER MC-11 allows angle shake correction in the lens for superior corrective performance.

Flocking inside barrel helps prevent internal reflections

MOUNT CONVERTER MC-11 features flocking in its interior to help prevent internal reflections and a reduction in lens performance.

Compatibility with Exif data

Lens type, focal length, F number, and other tags are embedded as Exif data in the image file.


The new mount converter
the extensibility
of the L-Mount system.

The SIGMA MOUNT CONVERTER MC-21 allows SIGMA SA mount and 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.


Available AF mounts: SIGMA SA-L、CANON EF-L*1
Barcode: SIGMA SA-L 00-85126-93724-9, CANON EF-L 00-85126-93723-2

Note: The appearance and specifications are subject to change without notice. *1 SIGMA’s CANON EE mount compatible lens
* SIGMA's CANON EF mount compatible lens

Effective use of lens investment

Attaching the MC-21 to your collection of SIGMA SA mount and 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.

* See the list of compatible lenses below.

36 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 36 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.

Compatible cameras

Lumix S1、Lumix S1R、Lumix S1H

Lens compatibility list

Sensor Size Product
35mm full frame
  • The MC-21 is not necessary for native L-Mount lenses.
  • Cannot be used in combination with teleconverter.
  • Operations using other non-compatible lenses are not guaranteed.

Simple interface

Green light: the lens is compatible
Orange light:the lens is compatible but requires firmware update
Not lighting up: the lens is not compatible

Whether the mounted lens is compatible or not is instantly visible from the color 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.

Lens data is pre-loaded

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.

Other features

Fast and accurate auto focus

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

Note: Not compatible with AF-C mode.

Comes with a 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 usage of the SIGMA Mount Converter MC-21 when it is used in combination with Panasonic’s LUMIX S1, LUMIX S1R, and LUMIX S1H
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.
Compatibility with other cameras
Cannot be used with Leica cameras (SL, CL, T, TL, TL2) released before the announcement of the L-Mount Alliance.


  • Maximum diameter84.4mm / 3.3in.
  • Full length42mm / 1.6in.
  • Mount reference plane spacing32mm / 1.2in.
  • Weight330g / 11.6oz.

A new converter that increases
the expandability of the L-Mount

SIGMA MOUNT CONVERTER MC-31 is a converter that allows PL mount lenses to be used on L-Mount cameras.
By using SIGMA MOUNT CONVERTER MC-31, users can use PL mount cine lenses, which are widely used in the filmmaking industry, on the SIGMA fp and other L-Mount cameras.


Mount: PL-L, Barcode: 00-85126-93819-2,
Accessories: Cap, Support foot, Hex wrench,
Mount lock screw,
L-Mount shim

Note: L-Mount is a registered trademark of Leica Camera AG.
Appearance and specifications are subject to change.

Main features

Shim adjustments
MC-31 has shim adjustments on two points of the mount. Adjustments can be made with a shim kit (Supplied) on the camera side of the mount2, or a shim for ARRI digital cameras on the lens side1.
All-metal construction for excellent durability
With an aluminum-alloy body4 and strong brass mount and locking ring5, MC-31 boasts excellent durability.
It is also designed to be secured on the mount of the SIGMA fp with a screw thread3, ensuring an even more secure connection between the lens and the camera. This allows users to shoot steady without the lens rattling even after the long-term use.
Support foot
The removable support foot6 allows MC-31 to be attached to a tripod or other filmmaking accessories such as a camera cage.
Suitable for various shooting conditions
With the screw thread removed, the stopper of the locking ring is released. This makes it possible to use MC-31 with a PL mount lens that requires tighter mounting than the MC-31’s specifications, allowing the lens to lock securely in place on the converter.
The markings on the upper part of the converter are in the same luminous paint as the one used for SIGMA CINE LENS, helping make it easier to replace or adjust a lens in the dark.

Full-fledged filmmaking is possible
by combining fp and PL mount lens

2019, SIGMA launched a L-Mount camera, SIGMA fp.
SIGMA fp, the world's smallest and lightest full-size mirrorless camera supports cinema camera-like user interfaces, which means that it can be taken straight to filmmaking settings. The small-size body translates into a smaller system as a whole, which in turn opens new possibilities for the forms of video creation that would have been difficult to achieve with bulky equipment, such as shooting in narrow space or extreme close-ups.
By using MC-31, not only SIGMA CINE LENSES, but also other manufactures PL mount lenses are available to use on SIGMA fp. The MC-31 Contributes to further expansion of the shooting system.

More about SIGMA fp


In 2018, Leica, Panasonic and SIGMA launched the L-Mount Alliance, and announced that the three companies were to develop their own camera systems based around the same L-Mount standard.
The L-Mount realizes a camera system that goes beyond the boundaries between manufacturers, with unprecedented levels of scalability and possibilities.
For details on the latest L-mount products and development status, please see below.

* The L-Mount Trademark is a registered Trademark of Leica Camera AG.