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Canon Issues Service Notice for EF 50mm f1.4 USM
30 August 2017
Canon has issued a service notice for its 50mm f1.4 USM prime lens for "a focus operation-related malfunction."
According to the notice, "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." Which is about 11 feet.
Lenses whose first four digits of their serial number are 4918, 5018, 5118, 5218, 5318 or 5418 may be affected. The serial number is engraved on the lens body.
The company will repair affected lenses at no charge. Details are in the service notice, the text of which is below.
Service Notice: EF 50mm f1.4 USM
Thank you for using Canon products.
We have determined that some EF50mm f1.4 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.
Phenomenon
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," or "5418" then your lens may possibly be affected.
Support
Potentially affected products will be inspected and if necessary repaired free of charge. If you own one of the potentially affected products please contact our Customer Support Center.
When preparing your lens for inspection please be sure to attach the lens cap and the dust cap to the lens.
If you have not already done so, please register your Canon Product. 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.