Firmware Update: RF 24-105mm F4 L IS USM: Firmware Version 2.0.1

Firmware incorporates the following enhancement:

  • Reduces color unevenness when capturing images using long (Bulb) exposure mode with the EOS Ra.

    *Manual focus cannot be activated during exposure. Performing zoom operations during exposure may result in an out of focus subject.

This firmware update is for lenses equipped with firmware versions older than RF 24-105mm F4 L IS USM Firmware Version 2.0.1, RF24-70mm F2.8 L IS USM Firmware Version 1.0.4 and RF70-200mm F2.8 L IS USM Firmware Version 1.0.5. If the lens’s firmware is already latest version, it is not necessary to update the firmware.

The firmware version of the lens can be checked from the camera's menu screen.


Download Firmware Version 2.0.1 for the RF 24-105mm F4 L IS USM.

If you have not already done so, please register the RF 24-105mm F4 L IS USM.  By registering, we will be able to notify you via email about future announcements.

This information is for residents of the United States and its five territories only. If you do not reside in the USA or its five territories, please contact the Canon Customer Support Center in your region.

Thank you,
Customer Support Operations
Canon U.S.A., Inc.

Contact Information for Inquiries
Canon Customer Support Center
Phone: 1-800-OK-CANON
TDD: 1-855-270-3277

Support options and hours of operation:


Need help with your product? Let us help you find what you need.
Product Support
Sign up for up-to-the-minute Canon News, Sales and Deals.
Discover great new ways to enjoy your products with exclusive articles, training and events.
Learn more