Canon RF 14-35mm F4L IS USM firmware v1.0.3

Firmware Version 1.0.​3 incorporates the following enhancement:

1. Adds the ability to correct focus breathing during movie recording.

• Compatible with cameras that supports focus breathing correction. If the lens' firmware is already Version 1.0.3, 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 current firmware version. Preparations for a firmware update: After the downloaded compressed file (.zip) is extracted, a firmware folder is created.
• Extracting the downloaded file: Right-click the zip file, and then select Extract All to extract the file. In the folder you downloaded are the firmware ( RF043103.afu / file size: 2,883,636 bytes) and instructions on the firmware update procedures (a PDF file in five langu​ages: Japanese, English, French, Spanish, and Simplified Chinese). Before starting the firmware update operations, please be sure to carefully review the instructions to confirm your understanding of the firmware update procedures.