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Canon EF 24-105mm f/4L IS II service notice, possible AF malfunction (update)


EF 24-105mm f/4L IS II

UPDATE 2: The service notice has been removed from Canon Philippine’s site. Don’t know the reason.

UPDATE: The [Submit] button mentioned in the service note below does not appear to work. Did not work for me, got also same feedback from readers.

Canon Philippines issued a service note for the Canon EF 24-105mm f/4L IS II USM lens. The lens may have AF issues at the wide angle.

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.

Affected Lenses

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.

How to check if your lens is affected:

  1. Click the search button below to display the serial number input screen.
  2. Input your lens’ serial number (10 digits) and then click the [Submit] button.
  3. One of the following three messages will be displayed.
    “Your lens is NOT an affected product”
    “Your lens is an affected product”
    “Invalid number”

Please head over to Canon Philippines and open the service notice text to access the [Submit] button.

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