Firmware Update: EF 600mm f/4L IS III USM Firmware Version 1.1.3

Thank you for using Canon products.

Affected Products
EF 600mm f/4L IS III USM

Support
Changes in firmware:

The 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.

Contact Information
Should you have any questions about the announcement, please contact the Authorized Service Facility in your area or you may contact the Call Center within your region.

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