optical test chart

2256 × 1698

color calibration chart

2560 × 1600

AAPM test pattern

1419 × 1410

test pattern with grayscale bars

1920 × 1200

Mozilla Firefox logo on dark background

1066 × 800

DIGI test chart

2560 × 1920

color calibration chart

1920 × 1080

Vision test chart

1600 × 1200

Skull test pattern

2214 × 1857

color bar test pattern

1920 × 1080

Television test pattern

1920 × 1200

grayscale test pattern

2560 × 1600