Canon RF Service Updates

Tamron does not guarantee functionality with Cinema cameras.

October 2025
Firmware Update Notice about 18-300mm F/3.5-6.3 Di III-A VC VXD (Model B061) for CANON RF mount

Thank you very much for your continued support of Tamron products.

On September 30, 2025, we announced an issue where our 18-300mm F/3.5-6.3 Di III-A VC VXD lens (Model B061) for Canon RF was not functioning properly when used with Canon’s EOS R5 Mark II and EOS R1 cameras that were updated to the latest firmware (Ver. 1.1.1 for the R5 Mark II, Ver. 1.1.2 for the R1) .

We are pleased to announce that the issue seen on the lens can now be resolved through a lens firmware update.

About the Firmware Update

The lens can be updated via TAMRON Lens Utility(tm) software.

Click here for details on lens firmware: https://www.tamron.com/global/consumer/support/download/firmware/b061/canon_rf/
Click here to download the TAMRON Lens Utility: https://www.tamron.com/global/consumer/support/download/lensutility/

We sincerely thank you for your continued support of Tamron products.

We’ve found an incompatibility issue between our 18-300mm F/3.5-6.3 Di III-A VC VXD lens (Model B061) and Canon’s EOS R5 Mark II and EOS R1 cameras.
This issue occurs when the cameras are updated to the latest firmware (Ver. 1.1.1 for the R5 Mark II, Ver. 1.1.2 for the R1) released in July 2025.

We are currently verifying the cause of this issue.
Updates will be informed on our support information page as soon as we have any solutions.

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