The Canon RF 400mm F2.8L IS USM is a professional super-telephoto prime lens natively designed for the RF mount, delivering outstanding optical performance at f/2.8 for sports, wildlife, and aviation photography where exceptional subject isolation is required. The native RF communication enables advanced coordination with EOS R bodies for optimized autofocus and image stabilization performance. Firmware updates ensure compatibility and performance improvements with the latest EOS R cameras.
Product released: August 1, 2022
Latest firmware version
Version 1.0.6, released April 2, 2024
Last checked for updates: Jul 1, 2026 12:02 UTC
What's new in version 1.0.6
Firmware Version 1.0.6 incorporates the following enhancement: 1. Improves the Panning Assist control feature for 2nd and subsequent images captured during continuous shooting when using the electronic shutter. If the lens' firmware is already Version 1.0.6, it is not necessary to update the firmware. You can check the firmware version of the lens from the camera menu. Refer to the camera instruction manual for how to check the current firmware version.
The Canon RF 400mm F2.8L IS USM is a professional super-telephoto prime lens natively designed for the RF mount, delivering outstanding optical performance at f/2.8 for sports, wildlife, and aviation photography where exceptional subject isolation is required. The native RF communication enables advanced coordination with EOS R bodies for optimized autofocus and image stabilization performance. Firmware updates ensure compatibility and performance improvements with the latest EOS R cameras. It was originally released on August 1, 2022.
What is the latest firmware version for the Canon RF 400mm F2.8L IS USM?
The latest firmware version for the Canon RF 400mm F2.8L IS USM is 1.0.6. It was released on April 2, 2024.
What changed in Canon RF 400mm F2.8L IS USM firmware version 1.0.6?
Canon RF 400mm F2.8L IS USM firmware version 1.0.6 includes the following changes: Firmware Version 1.0.6 incorporates the following enhancement: 1. Improves the Panning Assist control feature for 2nd and subsequent images captured during continuous shooting when using the electronic shutter. If the lens' firmware is already Version 1.0.6, it is not necessary to update the firmware. You can check the firmware version of the lens from the camera menu. Refer to the camera instruction manual for how to check the current firmware version.
How do I update the Canon RF 400mm F2.8L IS USM firmware?
To update the Canon RF 400mm F2.8L IS USM firmware, download the latest version (1.0.6) from Canon's website. Follow Canon's installation instructions, which typically involve copying the firmware file to a memory card or connecting via USB. You can download the latest firmware from Canon's support page.
Where can I download the latest Canon RF 400mm F2.8L IS USM firmware?
Details and download instructions for the latest Canon RF 400mm F2.8L IS USM firmware (version 1.0.6) are on Canon's official release page: https://www.canon.co.uk/support/consumer/products/lenses/rf/rf-400mm-f28l-is-usm.html?type=firmware
How do I check for Canon RF 400mm F2.8L IS USM firmware updates?
You can track Canon RF 400mm F2.8L IS USM firmware updates automatically on LatestUpdate.io. We monitor Canon's releases and notify you when new firmware versions are available, so you never miss an update.
Who makes the Canon RF 400mm F2.8L IS USM?
The Canon RF 400mm F2.8L IS USM is manufactured by Canon. Visit the official product page for more information.