First reports of repaired lenses.
The first set of Tamron owners have received lenses back from Tamron correcting the cross-type sensor issue with certain Canon DSLR bodies.
The 17-50 f/2.8 VC was sent in and Tamron’s official statement for the fix was “autofocus adjustment”. This is a bit deceptive, what actually was done was a lens ID change from 37 to 137 (85 f/1.2L II lens ID).
Tamron Japan has not officially admitted that there is an issue. Perhaps this is being done to avoid a mass recall of lenses.
Cost of repair?
For the moment, the lens ID switch is covered under the standard warranty. No word on out of warranty products yet.