Sigma MOUNT CONVERTER MC-11 (EF-E)

Sigma MOUNT CONVERTER MC-11 (EF-E) firmware

Sigma · MOUNT CONVERTER MC-11 (EF-E) · Lens

Latest firmware for the Sigma MOUNT CONVERTER MC-11 (EF-E) is v1.43 (August 27, 2026).

Changelog

MOUNT CONVERTER MC-11 (EF-E) firmware changelog

  1. v1.42 v1.43 Added support for Sigma High Speed cinema lenses and fixed flash release lag.

  2. v1.41 v1.42

  3. v1.40 v1.41 Fixed autofocus and manual focus assist bugs affecting lenses with manual override functionality.

  4. v1.39 v1.40

  5. v1.38 v1.39

  6. v1.37 v1.38 Enables compatibility with SIGMA 500mm F4 DG OS HSM Sports lens firmware version 2.03.

  7. v1.36 v1.37 Adds support for five Art lenses and fixes occasional video blinking.

  8. v1.35 v1.36 Adds support for six Sigma lenses with specific firmware versions.

  9. v1.34 v1.35 Adds support for five Sigma lens models.

  10. v1.33 v1.34 Adds compatibility with 14mm F1.8 and 50mm F1.4 DG HSM Art lenses.

Firmware history

  1. Version 1.43 Latest Released Aug 27, 2026 First seen Aug 28, 2026

    Added support for Sigma High Speed cinema lenses and fixed flash release lag. — summary by updatemystuff.com

    Show release notes
    • Added support for the Sigma High Speed Zoom ​Line 18-35mm T2 for Canon EF mount, firmware Ver. 1.01.
    • Added support for the Sigma FF High Speed Prime Line 35mm T1.5 for Canon EF mount, firmware ​Ver. 1.01.
    • Improved a release time lag issue that occurs under specific settings during flash photography.
    Release notes & download
  2. Version 1.42 Released Dec 22, 2022 First seen Jul 5, 2026
    Show release notes

    It makes the c​onverter compatible with the SIGMA CINE LENS FF ​High Speed Prime Line 65mm T1.5 FF for Canon EF mount.

    Release notes & download
  3. Version 1.41 Released Aug 25, 2022 First seen Jul 5, 2026

    Fixed autofocus and manual focus assist bugs affecting lenses with manual override functionality. — summary by updatemystuff.com

    Show release notes

    Fixed a problem in which the MF assist function would not work in rare cases whe​n a lens with the MF switching function (Manual Override) enabled, or a lens with the focus mode switch set to MO was attached.

    Fixed a ​problem in which the AF would not work in rare cases when the focus ring was turned during video recording in AF mode with a lens which has the MF switching function (manual override) enabled.

    Release notes & download
  4. Version 1.40 Released Apr 7, 2022 First seen Jul 5, 2026
    Show release notes

    It has improved the phenomenon whereby t​he lens’s optical stabilizer effect differs depe​nding on the shutter type and drive mode used.

    Release notes & download
  5. Version 1.39 Released Oct 21, 2021 First seen Jul 5, 2026
    Show release notes

    It makes the converter compatibl​e with the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contem​porary in Canon EF mount, that has the latest firmware Ver2.03.

    Release notes & download
  6. Version 1.38 Released Jul 8, 2021 First seen Jul 5, 2026

    Enables compatibility with SIGMA 500mm F4 DG OS HSM Sports lens firmware version 2.03. — summary by updatemystuff.com

    Show release notes

    It makes the converter compatible with the SIGMA 500mm F4 DG OS HSM | Spo​rts in Canon EF mount, that has the latest firmware Ver.2.03.

    • Please be sure to update SIGMA Optimization Pro to Ver.1.6.0 or later when updati​ng the MC-11 firmware. SIGMA Optimization Pro
    Release notes & download
  7. Version 1.37 Released Dec 17, 2020 First seen Jul 5, 2026

    Adds support for five Art lenses and fixes occasional video blinking. — summary by updatemystuff.com

    Show release notes

    It makes the converter compatible with the SIGMA 30mm F1.4 DC HSM | Art in Canon EF mount, that has the latest firmware Ver.2.01.It makes the converter compatible wit​h the SIGMA 28mm F1.4 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.1.02.It makes the converter compatible with the SIGMA 70mm F2.8 DG MACRO | Art in Canon EF mount, that has the latest firmware Ver.1.01.It makes the converter compatible with the SIGMA 85mm F1.4 DG HSM | Art in Canon EF mount, that has the latest firmware Ver. 2.03.It makes the converter com​patible with the SIGMA 135mm F1.8 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.03.It has improved a rarely-occurring blinking phenomenon during movie shooting.

    • Please be sure to update SIGMA Optimization Pro to Ver.1.6.0 or later when updating the MC-11 firmware. SIGMA Optimization Pro
    Release notes & download
  8. Version 1.36 Released Nov 19, 2020 First seen Jul 5, 2026

    Adds support for six Sigma lenses with specific firmware versions. — summary by updatemystuff.com

    Show release notes

    It makes the converter compatible with the SIGMA 12-24mm F4 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.01It makes the converter compatible with the SIG​MA 24-35mm F2 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.01It makes the converter compatible with the SIGMA 50-100mm F1.8 DC HSM | Art in Canon EF mount, that has the latest firmware Ver.2.03It makes the converter compatible with the SIGMA 60-600mm F4.5-6.3 DG OS HSM | Sports in Canon EF mount, that has the latest firmware Ver.1.03It makes the converter comp​atible with the SIGMA 24mm F1.4 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.02It makes the converter compatible with the SIGMA 35mm F1.4 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.02 ※Please be sure to update SIGMA Optimization Pro to Ver.1.6.0 or later when updating the MC-11 firmware.

    SIGMA Optimization Pro

    Release notes & download
  9. Version 1.35 Released Oct 22, 2020 First seen Jul 5, 2026

    Adds support for five Sigma lens models. — summary by updatemystuff.com

    Show release notes

    It makes the converter compatible with the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.03.It makes the converter compatible with the SIGMA 70​-200mm F2.8 DG OS HSM | Sports in Canon EF mount, that has the latest firmware Ver.1.02.It makes the converter compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.07.It makes the converter compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Sports in Canon EF mount, that has the latest firmware Ver.2.02.It makes the converter compatible with the SIGMA 20mm F1.4 ​DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.01.

    • Please be sure to update SIGMA Optimization Pro to Ver.1.6.0 or later when updating the MC-11 firmware. SIGMA Optimization Pro
    Release notes & download
  10. Version 1.34 Released Sep 17, 2020 First seen Jul 5, 2026

    Adds compatibility with 14mm F1.8 and 50mm F1.4 DG HSM Art lenses. — summary by updatemystuff.com

    Show release notes

    It makes the converter com​patible with the SIGMA 14mm F1.8 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.01.It makes the converter compatible with the SIGMA 50mm F1.4 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.2.03.

    • Please be su​re to update SIGMA Optimization Pro to Ver.1.6.0 or later when updating the MC-11 firmware. SIGMA Optimization Pro
    Release notes & download
  11. Version 1.33 Released Aug 20, 2020 First seen Jul 5, 2026

    Adds support for three Sigma EF lenses with their latest firmware versions. — summary by updatemystuff.com

    Show release notes

    It makes the conve​rter compatible with the SIGMA 14-24mm F2.8 DG HSM | Art in Canon EF mount, that has the latest firmware Ver.1.02.It makes the converter compatible with the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary in Canon EF mount, that has the latest firmware Ver.2.02.It makes the converter compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Contemporary in Canon EF mount, that​ has the latest firmware Ver.2.03.

    • Please be sure to update SIGMA Optimization Pro to Ver.1.6.0 or later when updating the MC-11 firmware. SIGMA Optimization Pro
    Release notes & download
  12. Version 1.32 Released Jul 21, 2020 First seen Jul 5, 2026

    Now compatible with three Canon EF lenses when running their latest firmware. — summary by updatemystuff.com

    Show release notes

    It has bec​ome compatible with the SIGMA 18-35mm F1.8 DC HSM | Art for Canon EF mount, that has the latest firmware Ver.2.03.It has become compatible with the SIGMA 24-105mm F4 DG OS HSM | Art for Canon EF mount, that has the latest firmware Ver.2.01.It has become comp​atible with the SIGMA 120-300mm F2.8 DG OS HSM | Sports for Canon EF mount, that has the latest firmware Ver.2.02.

    Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later.

    Release notes & download
  13. Version 1.31 Released Jun 25, 2020 First seen Jul 5, 2026

    Adds compatibility with the SIGMA 500mm F4 DG OS HSM Sports lens. — summary by updatemystuff.com

    Show release notes

    It has become compa​tible with the SIGMA 500mm F4 DG OS HSM | Sports for Canon EF mount, that has the latest firmware Ver.2.02. Note: Before updating the SIGMA ​MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later.

    Release notes & download
  14. Version 1.30 Released Apr 23, 2020 First seen Jul 5, 2026

    Extended compatibility with four lenses and optimized illumination correction. — summary by updatemystuff.com

    Show release notes

    It has optimized the peripheral ​illumination correction data when used in combination with SIGMA 24-105mm F4 DG OS HSM | Art for CANON EF mount.

    It has become compatible with the SIGMA 18-300mm F3.5-6.3 DC MACRO OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.02.It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for CANON EF mount, that has the latest firmware Ver.2.05.It has become compatible with the SIGMA 40mm F1.4 DG HSM | Art for CANON EF mount, that has the latest firmware Ver.1.01.It has become compatible with the SIGMA 105mm F1.4 DG ​HSM | Art for CANON EF mount, that has the latest firmware Ver.1.01.

    Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later.

    Release notes & download
  15. Version 1.29 Released Jan 23, 2020 First seen Jul 5, 2026

    Adds compatibility with SIGMA 100-400mm Contemporary lens. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA ​100-400mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.06. Note: Before updating the SIGMA MOUNT CONVERT​ER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later.

    Release notes & download
  16. Version 1.28 Released Dec 19, 2019 First seen Jul 5, 2026

    Adds support for four SIGMA lenses with latest firmware versions. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 28mm F1.4 DG HSM | Art for CANON EF mount, that has the latest firmware Ver. 1.01.It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for​ CANON EF mount, that has the latest firmware Ver. 2.04.It has become compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Sports for CANON m​ount, that has the latest firmware Ver. 2.01.It has become compatible with the SIGMA 500mm F4 DG OS HSM | Sports for CANON EF mount, that has the latest firmware Ver. 2.01.

    Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later.

    Release notes & download
  17. Version 1.27 Released Nov 22, 2019 First seen Jul 5, 2026

    Adds support for four EF-mount telephoto and prime lenses — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 60-600mm F4.5-6.3 DG OS HSM |​ Sports for CANON EF mount, that has the latest firmware Ver.1.02.It has become compatible with the SIGMA 70-200mm F2.8 DG OS HSM | Sports for CANON EF mount, that has the latest firmware Ver.1.01.It has become compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.02.It has become compatible with the ​SIGMA 50mm F1.4 DG HSM | Art for CANON EF mount, that has the latest firmware Ver.2.02.

    Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later.

    Release notes & download
  18. Version 1.26 Released Jun 20, 2019 First seen Jul 5, 2026

    Adds support for three Sigma lenses: 24mm F1.4 Art, 18-200mm Contemporary, and 18-300mm Contemporary. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 24mm F1.4 DG HSM | Art for CANON EF mount, that has the latest firmware​ Ver.2.01.It has become compatible with the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.02.It has become compatible with the SI​GMA 18-300mm F3.5-6.3 DC MACRO OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.01.

    Release notes & download
  19. Version 1.25 Released May 23, 2019 First seen Jul 5, 2026

    Adds compatibility with a sports lens and improves autofocus performance with specific Sony cameras and Art lens combinations. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 120-300mm F2.8 DG OS HSM | Sports for CANON E​F mount, that has the latest firmware Ver.2.01.It has improved the A​F speed when it is used in combination with the SONY α9 or SONY α7 III and the SIGMA 135mm F1.8 DG HSM | Art for CANON EF mount.

    Release notes & download
  20. Version 1.24 Released Apr 18, 2019 First seen Jul 5, 2026

    Added compatibility with two Sigma lens models for Canon EF mount. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount,​ that has the latest firmware Ver.2.05.It has become compatible with the SIGMA 135mm F1.8 DG HSM | Art for CANON EF mount, that has the latest firmware Ver.2.02.

    Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, pleas​e ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later.

    Release notes & download
  21. Version 1.23 Released Mar 14, 2019 First seen Jul 5, 2026

    Adds lens compatibility, improves Sony camera stabilization compensation, and enhances flash exposure accuracy. — summary by updatemystuff.com

    Show release notes

    It has optimized the peripheral illumination correction data when it is used in combination with the SIGMA 18-300mm F3.5-6.3 DC MACRO OS HSM | Contemporary for Canon EF mount.

    It has become compatible with the SIGMA 30mm F1.4 DC HSM | Art for CANON EF mount, that has the latest firmware Ver.2.00.It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for CANON EF mount, that has the latest firmware Ver.2.03.It has become compatible with the SIGMA 60-600mm F4.5-6.3 DG OS HSM | Sports for CANON EF mount, that has the latest firmware Ver.1.0​1.It has become compatible with the SIGMA 120-300mm F2.8 DG OS HSM | Sports for CANON EF mount, that has the latest firmware Ver.2.00.It has become compatible with the SIGMA 150-600mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.01.It has become compatible with the SIGMA 85mm F1.4 DG HSM | Art for CANON EF mount, that has the latest firmware Ver.2.02.It has improved the compensation effect when it is used in combination with the Sony α9, Sony α7III and specific lenses*, and their in-camera image stabilization adjustment is set to AUTO.

    It has been set to achieve the same effect as when it is adjusted manually.

    It has improved the accuracy of exposure when it is used with dedicated flashes manufactured by SONY.

    • Specific lensesSIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary、SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary、SIGMA 18-300mm F3.5-6.3 DC ​MACRO OS HSM | Contemporary、SIGMA 50-100mm F1.8 DC HSM | Art、SIGMA 24-70mm F2.8 DG OS HSM | Art、SIGMA 24-105mm F4 DG OS HSM | Art、SIGMA 60-600mm F4.5-6.3 DG OS HSM | Sports、SIGMA 70-200mm F2.8 DG OS HSM | Sports、SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary、SIGMA 120-300mm F2.8 DG OS HSM | Sports、SIGMA 150-600mm F5-6.3 DG OS HSM | Contemporary、SIGMA 150-600mm F5-6.3 DG OS HSM | Sports、SIGMA 70mm F2.8 DG MACRO | Art、SIGMA 85mm F1.4 DG HSM | Art、SIGMA 105mm F1.4 DG HSM | Art、SIGMA 135mm F1.8 DG HSM | Art、SIGMA 500mm F4 DG OS HSM | Sports Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later for both Windows and Macintosh.
    Release notes & download
  22. Version 1.22 Released Feb 21, 2019 First seen Jul 5, 2026

    Enables compatibility with five Sigma EF-mount lenses with their latest firmware. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary for CANON EF mount, that has the latest ​firmware Ver.2.01.It has become compatible with the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.01.It has become compatible with the SIGMA 18-35mm F1.8 DC HSM | Art for CANON EF mount, that has the latest firmware Ver.2.02.It has become compatible with the SIGMA 50-100mm F1.8 DC HSM | Art for CANON EF mount, that has the latest firmware ​Ver.2.02.It has become compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.04.

    Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.5.0 or later for Windows, and ver. 1.5.0 or later for Macintosh.

    Release notes & download
  23. Version 1.21 Released Jan 24, 2019 First seen Jul 5, 2026

    Added support for multiple Sigma lenses including cinema primes, telephoto, zooms, and Art series optics. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 500mm F4 DG OS HSM | Sports for CANON EF mount, that has the latest firmware Ver.2.00.It has become compati​ble with the SIGMA 24-35mm F2 DG HSM | Art for CANON EF mount, that has the latest firmware Ver.2.00.It has become compatible with the SIGMA 18-300mm F3.5-6.3 DC MAC​RO OS HSM | Contemporary for CANON EF mount, that has the latest firmware Ver.2.00.It has become compatible with the SIGMA 28mm F1.4 DG HSM | Art for CANON EF mount.

    It has become compatible with the SIGMA CINE LENS FF High Speed Prime Line 28mm T1.5 FF for EF mount and 40mm T1.5 FF for EF mount.

    Release notes & download
  24. Version 1.20 Released Nov 29, 2018 First seen Jul 5, 2026

    Adds compatibility with the SIGMA 70-200mm F2.8 DG OS HSM Sports lens — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 70-200mm F2.8 DG​ OS HSM | Sports. Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, please ensure SIGMA Optim​ization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  25. Version 1.19 Released Oct 30, 2018 First seen Jul 5, 2026

    Adds compatibility with three Sigma Canon lenses. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 40mm F1.4 DG HSM | Art for ​Canon.

    It has become compatible with the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary for Canon and the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary for Canon, that have the latest firmware Ver.2.00.

    Note: Before updating the SIGMA MOUNT CONVERTER MC-11 firmware, p​lease ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  26. Version 1.18 Released Oct 16, 2018 First seen Jul 5, 2026

    Added compatibility with 105mm T1.5 FF EF Cine lens and 24-105mm F4 DG OS HSM Art for Canon. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 105mm T1.5 FF EF mount Cine lens ​from the FF High Speed Prime Line. It has become compatible with the SIGMA 24-105mm F4 DG ​OS HSM | Art for Canon which has the latest firmware Ver.2.00.

    Release notes & download
  27. Version 1.17 Released Oct 2, 2018 First seen Jul 5, 2026

    Adds compatibility with SIGMA 60-600mm F4.5-6.3 and 24-70mm F2.8 lenses. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 60-600mm F4.5-6.3 DG OS HSM | Sports.​It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art (For SIGMA: Ver.1.03, For Canon: Ver.2.02).Note: Before updating the firmware using the SIGMA MOUNT CON​VERTER MC-11, please ensure to update SIGMA Optimization Pro to Ver.1.4.1 or later for Windows, and Ver.1.4.0 or later for Macintosh.

    Release notes & download
  28. Version 1.16 Released Sep 10, 2018 First seen Jul 5, 2026

    Supports newer lens firmware versions and improves autofocus in peripheral areas and Eye AF. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 150​-600mm F5-6.3 DG OS HSM | Contemporary (Firmware Ver.2.00) and SIGMA 150-600mm F5-6.3 DG OS HSM | Sports (Firmware Ver.2.00).It has become compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary（Firmware Ver.2.03).It has become compatible with the SIGMA 50-100mm F1.8 DC HSM | Art (Firmware Ver.2.01).With applicable SGV lenses*, it has improved AF performance in the peripheral areas of the image as well as the “Eye AF” function when it is selected, * Applicable SGV lenses: SIGMA 30mm F1.4 DC HSM | Art、SIGMA 14mm F1.8 DG HSM | Art、SIGMA 20mm F1.4 DG HSM | Art、SIGMA 24mm F1.4 DG HSM | Art、SIGMA 500mm F4 DG OS HSM | Sports、SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary、SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary、SIGMA 18-300mm F3.5-6.3 DC MACRO OS HSM | Contemporary、SIGMA 50-100mm F1.8 DC HSM | Art、SIGMA 12-24mm F4 DG HSM | Art、SIGMA 24-35mm F2 DG HSM | Art、SIGMA 24-105mm F4 DG OS HSM | Art、SIGMA ​120-300mm F2.8 DG OS HSM | Sports、SIGMA 150-600mm F5-6.3 DG OS HSM | Contemporary、SIGMA 150-600mm F5-6.3 DG OS HSM | Sports Note: Before updating the firmware using the SIGMA MOUNT CONVERTER MC-11, please ensure to update SIGMA Optimization Pro to Ver.1.4.1 or later for Windows, and Ver.1.4.0 or later for Macintosh.

    Release notes & download
  29. Version 1.15 Released Jul 13, 2018 First seen Jul 5, 2026

    Adds support for additional SIGMA Canon lenses at various firmware versions — summary by updatemystuff.com

    Show release notes

    It has become compatible with the following SIGMA interchangeable lenses for Canon* that have the latest firmware Ver.2.01.It has becom​e compatible with the SIGMA 14-24mm F2.8 DG HSM | Art for Canon with firmware Ver.1.01.It has become compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for Canon with firmware Ver.2.02.

    Note: Before updating the MC-11 firmware, please ensure SIGMA Optimiz​ation Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    • SIGMA 14mm F1.8 DG HSM | Art、SIGMA 20mm F1.4 DG HSM | Art、SIGMA 24mm F1.4 DG HSM | Art、SIGMA 12-24mm F4 DG HSM | Art、SIGMA 50-100mm F1.8 DC HSM | Art
    Release notes & download
  30. Version 1.14 Released Jun 12, 2018 First seen Jul 5, 2026

    Adds compatibility with 105mm F1.4 DG HSM Art and SIGMA Canon lenses with firmware 2.01. — summary by updatemystuff.com

    Show release notes

    It has become com​patible with the SIGMA 105mm F1.4 DG HSM｜Art for Canon.

    It has become compatible with the SIGMA interchangeable lenses for Canon that have the latest firmware Ver.2.01.

    Note: Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been​ updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  31. Version 1.13 Released May 23, 2018 First seen Jul 5, 2026

    Added support for the SIGMA 70mm F2.8 DG MACRO Art lens. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 70mm F2.8 DG MACRO | Art. Note: ​Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or la​ter for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  32. Version 1.12 Released Mar 7, 2018 First seen Jul 5, 2026

    Added compatibility with a new lens and improved autofocus performance in peripheral areas and Eye AF mode. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 14-24mm F2.8 DG HSM | Art for Canon.

    It has become compatible with SIGMA interchangeable lenses for Canon*1 that are updated to firmware​ ver.2.00.With the SGV lenses(Ver.2.00)*1 listed below, it has improved AF performance in the peripheral areas of the image as well as when the “Eye AF” function is selected.

    With lenses that are not compatible with the MC-11, it has corrected the release time lag which occurred during flash photography.*2 Note: Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh. *1 SIGMA 35mm F1.4 DG HSM | Art, SIGMA 50mm F1.4 DG HSM | Art, SIGMA 85mm F1.4 DG HSM |​ Art, SIGMA 135mm F1.8 DG HSM | Art, SIGMA 18-35mm F1.8 DC HSM | Art, SIGMA 24-70mm F2.8 DG OS HSM | Art, SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary *2 Please note that this does not guarantee accurate operation with all the lenses that are not compatible with the MC-11.

    Release notes & download
  33. Version 1.11 Released Sep 8, 2017 First seen Jul 5, 2026

    Fixes false autofocus confirmation on Sony a9 with certain zoom lenses in telephoto mode; adds compatibility with two Canon-mount lenses. — summary by updatemystuff.com

    Show release notes

    It has corrected the phenomenon whi​ch may occur with the combination of SIGMA MOUNT CONVERTER MC-11 and some of SIGMA’s interchangeable zoom lenses on Sony a9 (ILCE-9) that when using AF-S mode and shooting in telephoto range, it could occasionally display the shot as in focus, although it may not be correctly locked on the subject.

    It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for CANON​ (Firmware Ver.1.02), as well as the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for CANON (Firmware Ver1.03).

    Note: Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  34. Version 1.10 Released Aug 18, 2017 First seen Jul 5, 2026

    Adds compatibility with a 24-70mm F2.8 Art lens for Canon — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 24-70mm F2.8 DG OS HSM | Art for Cano​n (ver. 1.01). Note: Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1​ or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  35. Version 1.09 Released Aug 4, 2017 First seen Jul 5, 2026

    Adds support for the SIGMA 100-400mm F5-6.3 Contemporary lens for Canon. — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporar​y for CANON (ver. 1.02). Note: Before updating the MC-11 firmware, please ens​ure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  36. Version 1.08 Released Jul 20, 2017 First seen Jul 5, 2026

    Fixes autofocus issues with certain incompatible lenses. — summary by updatemystuff.com

    Show release notes

    It corrects the phenomenon​ that AF does not operate properly when some lenses that are not compatible with the MC-11 are attached.

    Note: Before updating the MC-11 firmware, please ensur​e SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  37. Version 1.07 Released Jul 5, 2017 First seen Jul 5, 2026

    Adds support for four SIGMA lenses across two product lines — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGM​A 14mm F1.8 DG HSM | Art and SIGMA 24-70mm F2.8 DG OS HSM | Art.It has become compatible with the FF High Speed Prime Line SIGMA 14mm T2 FF (EF) and the SIGMA 135mm T2 FF (EF).

    Note: Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. ​1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  38. Version 1.06 Released Jun 6, 2017 First seen Jul 5, 2026
    Show release notes

    It has become ​compatible with the SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary for​ Canon (ver. 1.01).

    Release notes & download
  39. Version 1.05 Released May 17, 2017 First seen Jul 5, 2026

    Adds compatibility with four Canon-mount lenses — summary by updatemystuff.com

    Show release notes

    It has become compatible with the SIGMA 24-105mm F4 DG OS HSM | Art in Canon mount (firmware version 1.02).It has become compatible with ​the SIGMA 17-70mm F2.8-4 DC MACRO OS HSM | Contemporary in Canon mount (firmware version 1.03).It has become compatible with the SIGMA 18-200mm F3.5-6.3 DC MACRO OS HSM | Contemporary in Canon mount (firmware version 1.02).It has​ become compatible with the SIGMA 18-300mm F3.5-6.3 DC MACRO OS HSM | Contemporary in Canon mount (firmware version 1.01).

    Note: Before updating the MC-11 firmware, please ensure SIGMA Optimization Pro has been updated to ver. 1.4.1 or later for Windows, and ver. 1.4.0 or later for Macintosh.

    Release notes & download
  40. Version 1.04 Released Mar 21, 2017 First seen Jul 5, 2026

    Added compatibility support for additional photo and cinema lenses. — summary by updatemystuff.com

    Show release notes

    It has bec​ome compatible with the SIGMA 135mm F1.8 DG HSM | Art and SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary.

    It has become compatible with the Cine Lenses; SIGMA 20 mm T1.5 FF EF mount, 24 mm T1.5 FF EF mount, 35mm T1.5 FF EF mount, 50 mm T1.5 FF EF mount, 85 mm T1.5 FF EF mou​nt from FF High Speed Prime Line, and 24-35mm T2.2 FF EF mount from FF Zoom Line.

    Release notes & download
  41. Version 1.03 Released Dec 13, 2016 First seen Jul 5, 2026

    Added compatibility with SIGMA 18-35mm and 50-100mm T2 cine lenses from High Speed Zoom Line. — summary by updatemystuff.com

    Show release notes

    It has become compatible wi​th the SIGMA 18-35mm T2 EF mount and the 50-100mm T2 EF mount Cine lenses from High Speed Zoom Line.

    • If SIGMA Optimization Pro is Ver. 1.3 or earlier, please firstly up​date the version of the software to Ver. 1.4.
    Release notes & download
  42. Version 1.02 Released Oct 27, 2016 First seen Jul 5, 2026

    Speeds up startup, improves focus accuracy with Canon EF lenses, and enhances optical stabilizer control. — summary by updatemystuff.com

    Show release notes

    It is fully functional with SIGMA 12-24mm F4 DG HSM | Art, SIGMA 500mm F4 DG OS HSM | Sports and SIGMA 85mm F1.4 DG HSM | Art​ lenses.

    It has reduced the startup time between turning on the camera and taking an image by not initially driving the focus when the camera is turned on.When lenses with Optical Stabilizer (OS) function that are not fully compatible with SIGMA MOUNT CONVERTER MC-11 are attached with SIGMA MOUNT CONVERTER MC-11 and mounted on a camera which incorporates a stabilizer unit, it enables the camera’s stabilizer unit to be turned off and the lens’s OS function to be turned on and off.It has improved the AF accuracy of Canon EF lenses that are not fully compatible with SIGMA M​OUNT CONVERTER MC-11.It has corrected the phenomenon where the distortion correction figure is not indicated properly in the camera, when SIGMA 24-105mm F4 DG OS HSM | Art is attached.

    Release notes & download
  43. Version 1.01 Released May 13, 2016 First seen Jul 5, 2026

    Addresses LED lamp issues with incompatible lenses, continuous shooting, and aperture control. — summary by updatemystuff.com

    Show release notes

    It has improved the following phenomenon that occurs when lenses that are not compatible with the MC-11 are attached and no light is emitted on the MC-11’s LED lamp.

    It does not operat​e properly on continuous shooting mode.

    In the case of some lenses that incorporate an OS function, when the camera’s power is turned off, it does not respond to any operation for a certain period of time.

    When open aperture is not selected for shooting, the aperture does not retu​rn to fully open.

    • Improvements may not be visible with some products.
    • The phenomenon that the diaphragm closes when the camera’s power is turned off is due to the characteristic of the camera and is considered to specification.
    Release notes & download

Watch the MOUNT CONVERTER MC-11 (EF-E) for updates

Get an email the moment Sigma publishes new firmware. Just your email — no account or password needed.

More Sigma lenses we track