I am rather disappointed with the HOYA 82 UV IR filter on the 16-35. There is a very clear green color cast in the corners.
The slim UV filter that I have as well does NOT have this problem.
At 205$, this hurts.
Settings, 16-35 F2.8 L @16 mm, 1DX, F2.8, iso 250, 1/6400.
Stopping down helps, but even at F9.0 it is still visible