For sharpness adjustment

2530 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

4.3K0 1 2 3 4 5 6 7 8 9.0 1 2 3 4 5 6 7 8 9K

5540 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