Free Standard Shipping & Handling on Cameras & Lenses
Offer valid July 1, 2025 at 12:00 AM EST through July 31, 2025 at 11:59 PM EST. Offer valid only on consumer camera and lens products available for sale through the Canon online store only. Offer not valid on bulk orders. Orders will be shipped to a street address in the 50 United States or the District of Columbia only. Free standard shipping and handling offer is a $5.99 to $15.99 Canon online store value. Offer subject to the Canon Terms of Sale. Dealers, distributors and other resellers are not eligible for this offer. Offer void where prohibited, taxed, or restricted.
Free Standard Shipping & Handling on all Ink & Toner
Offer valid July 1, 2025 at 12:00 AM EST through July 31, 2025 at 11:59 PM EST. Offer valid only on ink and toner available for sale through the Canon online store only. Offer not valid on bulk orders. Orders will be shipped to a street address in the 50 United States or the District of Columbia only. Free standard shipping and handling offer is a $5.99 to $15.99 Canon online store value. Offer subject to the Canon Terms of Sale. Dealers, distributors and other resellers are not eligible for this offer. Offer void where prohibited, taxed, or restricted.
Firmware Notice: EF 400mm F2.8L IS III USM: Firmware Version 1.1.2
Firmware Version 1.1.2 incorporates the following enhancements:
- Increases the manual focus speed when the manual focus speed switch is set to 1 or 2.
*The speed when the switch is set to 3 (slowest speed) will be unchanged.
- Improves the image stabilization effect during handheld shooting with a slow shutter speed when used with EOS 5D Mark IV, EOS 6D, or EOS R.
*Enables a full-time manual focus function during Servo AF when used with the EOS-1D X Mark II. The lens must be sent to the Factory Service Center in order for this funcion to be enabled.
If the lens' firmware is already Version 1.1.2, it is not necessary to update the firmware.
The lens' firmware version can be checked from the camera's menu.
Support
Download Firmware Version 1.1.2 for the EF 400mm F2.8L IS III USM lens.
If you have not already done so, please register the EF 400mm F2.8L IS III USM lens. 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 |
1-800-652-2666 |
|
TDD: |
1-855-251-3752 |
Email: |
carecenter@cits.canon.com |
Support options and hours of operation: www.usa.canon.com/support |

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