For sharpness adjustment

1010 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 9

770 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 9

260 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 9