Canon USA has today posted a service notice relating to the new EF 24-105 mm F4L IS USM lens. The notice describes a problem which affects some early production samples of this lens where 'unacceptable levels of flare' can occur, mostly at wide angle and maximum aperture. Those lenses with a control number (a serial number beginning with UT) of 999 or less are affected. The notice goes on to offer a free repair service (including shipping) which will commence on November 14th. We haven't seen any other such notices from any other regions.

Click here to read the Canon USA service notice