Lenses Canon EF 50mm f/1.4 USM identified a problem with focusing
On the Canon website published a message about the problem found in lenses Canon EF 50mm f/1.4 USM.
According to the manufacturer, the problem concerns the focus and manifests itself both in manual and in automatic mode. When the focus point is moved from infinity to the minimum distance, focusing becomes impossible when you reach the part of the scale shown in the illustration.
The defect is manifested not in all instances. Potentially susceptible lenses can be identified by serial number. If the number starts with the digit sequence 4918, 5018, 5118, 5218, 5318 5418 or — there is reason to contact the service center.
The manufacturer promises to check and repair the lens for free.