The Canon EF 600mm f/4L IS III USM is a professional super-telephoto prime lens offering a fast f/4 maximum aperture at 600mm for extreme reach in sports, wildlife, and nature photography. Like the EF 400mm IS III, it uses fluorite and UD elements with an updated optical design to achieve substantial weight reduction versus its predecessor. Firmware updates maintain compatibility with Canon's newest camera bodies and AF algorithms.
Product released: September 1, 2018
Latest firmware version
Version 1.1.3, released July 7, 2020
Last checked for updates: Nov 1, 2026 03:42 UTC
What's new in version 1.1.3
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 ( EF020113.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.
The Canon EF 600mm f/4L IS III USM is a professional super-telephoto prime lens offering a fast f/4 maximum aperture at 600mm for extreme reach in sports, wildlife, and nature photography. Like the EF 400mm IS III, it uses fluorite and UD elements with an updated optical design to achieve substantial weight reduction versus its predecessor. Firmware updates maintain compatibility with Canon's newest camera bodies and AF algorithms. It was originally released on September 1, 2018.
What is the latest firmware version of Canon EF 600mm f/4L IS III USM?
The latest firmware version of Canon EF 600mm f/4L IS III USM is 1.1.3. It was released on July 7, 2020.
What changed in Canon EF 600mm f/4L IS III USM firmware version 1.1.3?
Canon EF 600mm f/4L 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 ...
Where can I download the latest Canon EF 600mm f/4L IS III USM firmware?
Details and download instructions for the latest Canon EF 600mm f/4L 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-600mm-f4l-is-iii-usm.html?type=firmware