Update Lens Correction!

In fact, everything has been written already. Do I need not repeat :-)
Only to the cruel vignetting at 2.8 (from 4.0 everything is better) I have to get rid of what:
Who has an in-camera lens correction, should make sure you update the EOS utility. Then connect the camera to your computer ... in the update are the data for the 24'er! So the whole thing already looks a lot better - :)))
Otherwise: class lens - I would buy again.
-1 Star for vignetting.