Here again, no red grid is present at all in the image, no matter how fill light is pushed - this is a heavily recovered HDRish imaeg (in the bad sense) with exposure at -2.0 (the sun was very overexposed, -2.0 brought back sky detail), highlight/shadows pushed to +2.0, and Fill Light set to a "don't do that" value of +0.5 (giving it the artificial HDR look you see here). +0.3 gives a better look but I wanted to emphasize here nothing was going on.