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It appears a service notice for the Canon EF 24-105mm f/4L IS II has appeared on the Canon.ph site, and has since gone away. We suspect it will be sent out globally over the coming day or so.
Thank you for using Canon products.
We have determined that some EF 24-105mm f/4L IS II USM lenses exhibit an AF 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.
At the wide-angle end, focus is not achieved properly when a peripheral AF points are selected, regardless of the AF area selection mode.
If the first two digits in the serial number (see the image below) of your lens are ”48”, ”49”, ”50” or ”51”, then your lens MAY POSSIBLY be affected.”