Post by Administrator on Dec 29, 2006 11:46:14 GMT 8
From Canon Inc[/u]
The EF 70-300 f4-5.6 IS USM lens may display insufficient resolution at the edge of the frame at the 300mm setting when the camera is held vertically.
This phenomenon affects all EF 70-300 f4-5.6 IS USM lenses with a “0” or “1” in the third digit of the (8 digit) serial number. Products that have a third digit of “2” or higher in their serial number are not affected.
Kindly send your product to your nearest Canon Service Centre for a check-up to confirm whether it is caused by such phenomeon. It will be repaired free of charge upon confirmation of such phenomeon.