Firmware Download for Lenses

20mm F2 DG DN | Contemporary

(Sony E-mount)

Before Updating

    Note: While the Sony Camera Driver supports macOS 11 / 12 / 13 / 14, the Lens System Software Updater program only supports macOS 12 / 13 / 14 (macOS 11 is not supported).

Ver.03 2024.11.21

・Compatibility with continuous shooting of up to approximately 120 frames per second has been added for the autofocus modes (AF-S/DMF/MF) on Sony α9 III cameras.
・The operational stability has been improved.

Download (2.2MB)

Update_SigmaC20F2V3.dmg

Update Procedure

STEP 01 Operating the Software Program

Select the file “Update_SigmaC20F2V3.dmg” that has been downloaded onto the computer and double-click it to operate the software program.

* Do not connect the camera to the PC at this moment.

Login from the Administrator account to start up the Lens System Software Updater.

STEP 02 Check the camera status

Turn on the camera and select “USB Connection” from the Menu. Then select “Mass Storage”.

* Some cameras do not require this process.
* Do not connect the camera to the PC in this process.

STEP 03 Connect the camera to the PC

1. Ensure the memory card is removed while the lens is attached to the camera. Then use the supplied USB Cable to connect the camera to the PC.

2. After connecting the camera to the PC properly, select the “Next” button in the “Lens System Software Updater” and the below message will appear on the display;

* The message “follow the instructions on the computer” will appear on the camera display.

In the case of “The update is not available for your lens.” message appears, check the Lens System Software Updater is compatible with the lens to update.
The message appears even when the software and the lens are appropriate, close the Lens System Software Updater and remove the cable and power OFF the camera.
Then, start over the update process from the STEP 01.

In case the message “Could not update” appears, follow the instructions in the dialog to check the status.

STEP 04 Check the firmware version of the lens

Check the “Update Information” in the bottom left and confirm if the firmware version needs to be updated to Ver. 03.
Click the “Next” button to update it.
If the lens firmware is already Ver. 03, this process can be skipped.

STEP 05 Update the lens firmware

1. After checking the “Update Information”, click the “Next” button to start transferring the software data to the camera.

Do not power OFF the camera and ensure the USB cable is properly connected during the data transfer.

2. Once the data transfer is over, the following message will appear on the display, so click the “Finish” button.

3. After closing it, the message “Updating the lens” will appear on the camera display, and the firmware update of the lens will start.

STEP 06 Finish updating the firmware of the lens

When the message “Lens update complete.” appears on the camera display, the firmware update of the lens is successfully over. Follow the instructions on the screen to close the process. After closing it, remove the USB cable from the camera and the PC.

* After the firmware update is complete, turn off the camera and remove the battery or AC adapter.Then reinsert the battery/AC adapter and reboot the camera.

STEP 07 Confirm the updated software version

Check the “Version” from the camera menu, and confirm the lens version is updated to Ver. 03.

Read More

Update History

Ver.02 2022.10.13

AF assist function during video recording is now supported.
*Only SONY camera models with AF assist function are supported.
The focus distance shown on the screen during manual focus has been optimized.

Firmware Download for Lenses

20mm F2 DG DN | Contemporary

(Sony E-mount)

Before Updating

  • This firmware is for Sony E-mount only.
  • Please ensure that the firmware of the camera body is updated to the latest version.
  • Use a fully charged battery or connect the camera to the AC adapter
  • Do not disconnect the battery or the AC adapter during the firmware update of the lens
  • Ensure the power of the camera is always kept ON during the firmware update of the lens
  • Remove any memory card from the camera
  • The lens needs to be attached to a camera to update the firmware
  • OS other than Windows 10, Windows 11 are not supported. If you are unable to update, please contact your nearest authorized SIGMA subsidiary / distributor.

Ver.03 2024.11.21

・Compatibility with continuous shooting of up to approximately 120 frames per second has been added for the autofocus modes (AF-S/DMF/MF) on Sony α9 III cameras.
・The operational stability has been improved.

Download (4.4MB)

Update_SigmaC20F2V3.exe

Update Procedure

STEP 01 Operating the Software Program

Select the file “Update_SigmaC20F2V3.exe” that has been downloaded onto the computer and double-click it to operate the software program.

* Do not connect the camera to the PC at this moment.

STEP 02 Check the camera status

Turn on the camera and select “USB Connection” from the Menu. Then select “Mass Storage”.

* Some cameras do not require this process.
* Do not connect the camera to the PC in this process.

STEP 03 Connect the camera to the PC

1. Ensure the memory card is removed while the lens is attached to the camera. Then use the supplied USB Cable to connect the camera to the PC.

2. After connecting the camera to the PC properly, select the “Next” button in the “Lens System Software Updater” and the below message will appear on the display;

* The message “Follow computer instructions.” will appear on the camera display.

In the case of “The update is not available for your lens” message appears, check the Lens System Software Updater is compatible with the lens to update.
The message appears even when the software and the lens are appropriate, close the Lens System Software Updater and remove the cable and power OFF the camera.
Then, start over the update process from the STEP 01.

In case the message “Could not find a camera applicable for this update” appears, follow the instructions in the dialog to check the status.

STEP 04 Check the firmware version of the lens

Check the “Update Information” in the bottom left and confirm if the firmware version needs to be updated to Ver. 03.
Click the “Next” button to update it.
If the lens firmware is already Ver. 03, this process can be skipped.

STEP 05 Update the lens firmware

1. After checking the “Update Information”, click the “Next” button to start transferring the software data to the camera.

Do not power OFF the camera and ensure the USB cable is properly connected during the data transfer.

2. Once the data transfer is over, the following message will appear on the display, so click the “Finish” button.

3. After closing it, the message “Updating the lens” will appear on the camera display, and the firmware update of the lens will start.

STEP 06 Finish updating the firmware of the lens

When the message “Lens update complete.” appears on the camera display, the firmware update of the lens is successfully over. Follow the instructions on the screen to close the process. After closing it, remove the USB cable from the camera and the PC.

* After the firmware update is complete, turn off the camera and remove the battery or AC adapter. Then reinsert the battery/AC adapter and reboot the camera.

STEP 07 Confirm the updated software version

Check the “Version.” from the camera menu, and confirm the lens version is updated to Ver. 03.

Read More

Update History

Ver.02 2022.10.13

AF assist function during video recording is now supported.
*Only SONY camera models with AF assist function are supported.
The focus distance shown on the screen during manual focus has been optimized.