To Users of the Canon EOS 5D Mark III Digital SLR Camera and EF200mm f/2L IS USM and EF800mm f/5.6L IS USM Lenses
Thank you for using Canon products.
It has been confirmed that when the Canon EOS 5D Mark III Digital SLR Camera is used with the EF200mm f/2L IS USM and some units of the EF800mm f/5.6L IS USM lenses (the "Lenses"), the Lenses may emit an abnormal noise.
The Canon EOS 5D Mark III Digital SLR Camera does not need to be repaired as a result of this phenomenon.
*This phenomenon does not occur with cameras other than the EOS 5D Mark III.
This information is for residents of the United States and Puerto Rico only. If you do not reside in the USA or Puerto Rico, please contact the Canon Customer Support Center in your region.
Please register the EOS 5D Mark III, EF200mm f/2L IS USM lens and EF800mm f/5.6L IS USM lens. By registering, we will be able to notify you via email when service updates are available. If you already registered, please ensure you are opted-in to receive the notification.
Contact Information for Inquiries
Should you have questions about the announcement, please contact the Authorized Service Facility in your area or you may contact the Call Center within your region.