I have been a loyal Canon user for about 7 years now. I've had 70-200 F4L lenses for almost all that time. About three months ago I decided to get the 70-200 f4L IS figuring it would be just as amazing (image quality wise) and offer some more given the stabilizer. After three months the lens was at Canon for a new USM and objective 6/7 IS. I know this is a really popular lens on airliners along with the f2.8 big brother, so has anyone else experienced problems with it?
I tried requesting Canon to replace it, but the most they were willing to budge was an additional 6 months of warranty after my one year is up. I just picked up the lens so I definitely will test it out next week when the weather clears up. However, there is a big part of me that really just wants the lens replaced. The Canon service center claims that this happens frequently with jostling and use. To me that seems pretty far out as I baby my camera and having had the 70-200 without the IS for so long with no issues.
As for the age of the build, according to the date code it was built in Aug. of 2012 and I purchased it new in July 2013.
Anyone else experience problems similar to this or did I just get a defective lens?