Ordered dithering

Bayer 8×8 dithering

An 8×8 threshold matrix with 65 tones: enough for most photos, with a fine grid that fades at viewing distance. The classic look of early computer graphics.

Good for retro prints and games.

How it decides

 0  32   8  40   2  34  10  42
48  16  56  24  50  18  58  26
12  44   4  36  14  46   6  38
60  28  52  20  62  30  54  22
 3  35  11  43   1  33   9  41
51  19  59  27  49  17  57  25
15  47   7  39  13  45   5  37
63  31  55  23  61  29  53  21      thresholds (n + 0.5) ÷ 64

The 8×8 matrix holds the numbers 0 to 63, built by nesting the 2×2 pattern inside itself three times. No worms, no scan direction, the same pattern every time.