Firmware Notice: RF100-300mm F2.8 L IS USM Firmware Version 1.0.6

Firmware Version 1.0.6 incorporates the following enhancements:

  1. Improves focus, making it more easily achievable, even when performing fast zooming operations.
  2. Improves the Panning Assist control feature for 2nd and subsequent images captured during continuous shooting when using the electronic shutter.

If the lens’ firmware is already Version 1.0.6, it is not necessary to update the firmware.


Download Firmware Version 1.0.6 for the RF100-300mm F2.8 L IS USM.

To help obtain optimal performance of this camera, we recommend that you download the most recent version of the RF100-300mm F2.8 L IS USM manual.

If you have not already done so, please register the RF100-300mm F2.8 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.

Still need some help? In order to get more personalized and faster support, we recommend registering your product in your Canon Account.

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