Track your cameras, drones, routers, and more. We'll tell you the moment a new version drops.
Made by Canon
The Canon EF 400mm f/2.8L IS III USM is a professional super-telephoto prime lens offering exceptionally fast f/2.8 aperture for superior subject isolation and low-light performance at 400mm. It is significantly lighter than its predecessor through extensive use of magnesium and titanium construction, making it Canon's lightest 400mm f/2.8 at release. Firmware updates maintain compatibility with the latest Canon camera bodies and AF systems.
Product released: September 1, 2018
Version 1.1.3, released July 7, 2020
Verified by LatestUpdate: June 18, 2026
Firmware Version 1.1.3 incorporates the following enhancements: ・Focusing performance has been improved when using the Servo AF continuous shooting mode. Firmware Version 1.1.3 is for lenses with firmware up to Version 1.1.2 If the lens' firmware is already Version 1.1.3, 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 version. Please review the instructions thoroughly before you download the firmware. Preparations for the firmware update: In the folder you downloaded are the firmware ( EF019113.lfu / file size: 2,883,636 bytes) and instructions on the firmware update procedures (a PDF file in five languages: Japanese, English, French, Spanish, and Simplified Chinese). Before starting the firmware update operations, please be sure to check the procedure in accordance with the instruction.
Official Canon EF 400mm f/2.8L IS III USM product page
The Canon EF 400mm f/2.8L IS III USM is a professional super-telephoto prime lens offering exceptionally fast f/2.8 aperture for superior subject isolation and low-light performance at 400mm. It is significantly lighter than its predecessor through extensive use of magnesium and titanium construction, making it Canon's lightest 400mm f/2.8 at release. Firmware updates maintain compatibility with the latest Canon camera bodies and AF systems. It was originally released on September 1, 2018.
The latest firmware version for the Canon EF 400mm f/2.8L IS III USM is 1.1.3. It was released on July 7, 2020.
Canon EF 400mm f/2.8L IS III USM firmware version 1.1.3 includes the following changes: Firmware Version 1.1.3 incorporates the following enhancements: ・Focusing performance has been improved when using the Servo AF continuous shooting mode. Firmware Version 1.1.3 is for lenses with firmware up to Version 1.1.2 If the lens' firmware is already Version 1.1.3, 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 version. Please review the instructions thoroughly ...
To update the Canon EF 400mm f/2.8L IS III USM firmware, download the latest version (1.1.3) 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.
Details and download instructions for the latest Canon EF 400mm f/2.8L IS III USM firmware (version 1.1.3) are on Canon's official release page: https://www.canon.co.uk/support/consumer/products/lenses/ef/ef-400mm-f28l-is-iii-usm.html?type=firmware
You can track Canon EF 400mm f/2.8L IS III 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.
The Canon EF 400mm f/2.8L IS III USM is manufactured by Canon. Visit the official product page for more information.