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Product Notice

EF50mm f/1.4 USM Interchangeable Lens for Digital SLR Cameras and Mirrorless Cameras

Updated on: 5 September 2017

Posted on: 29 August 2017

Service Notice: EF50mm f/1.4 USM Interchangeable Lens for Digital SLR Cameras and Mirrorless Cameras


Serial numbers of affected products have been updated in red.

Thank you for using Canon products.

We have determined that some EF50mm f/1.4 USM lenses exhibit a focus operation-related malfunction. The details of the phenomenon and Canon’s service policy are described below.

We would like to offer our sincere apologies to users who have been inconvenienced by this issue. Going forward, we will spare no effort in our quality management to make sure our customers can use our products with confidence.


While in AF or MF mode, when the focus position is moved from the infinity end to the close-up end, the focus operation stops near the area shown in the dotted circle below.

Possibly Affected Products

If the first four digits (from the left) in the serial number on the lens body (see image below) are “4918”, “5018”, “5118”, “5218”,"5318", "5418", "5119", "5219", "5319", or "5419" then your lens may possibly be affected.

Market Support

If your lens is affected, support will be provided free-of-charge regardless of the warranty status. Please note that even if your lens is affected, inspection/repairs for any issue other than the above phenomenon will be handled as normal repairs.

If you wish to make a request for support for this issue, please attach the lens cap and dust cap to the lens and bring in the lens body only.

Contact Information for Inquiries

For questions about this matter, please contact our Customer Service Hotline.

Hotline Enquiry Hours
Customer Care Center Address and Opening Hours