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*

If this dip becomes too shallow, the two points

cannot be distinguished.

*More specifically, each point object is represented by a ‘Point Spread Function.’

*

sθ

r

Line of pixels

*Note: The horizontal screen width, not its diagonal dimension, is used.

53.62"61.52"30.16"

Device Pixel Size Pixel Columns Pixel Rows Viewing Distance Ideal Width Ideal Height Ideal Diagonal dpi

HDTV 0.5 1,920 1,080 192" 53.6" 30.2" 61.5" 36

HDTV 0.7 1,920 1,080 192" 75.1" 42.2" 86.1" 26

HDTV 1.0 1,920 1,080 192" 107.2" 60.3" 123.0" 18

4K HDTV 0.5 3,840 2,160 192" 107.2" 60.3" 123.0" 36

4K HDTV 0.7 3,840 2,160 192" 150.1" 84.4" 172.2" 26

4K HDTV 1.0 3,840 2,160 192" 214.5" 120.6" 246.1" 18

8K HDTV 0.5 7,680 4,320 192" 214.5" 120.6" 246.1" 36

8K HDTV 0.7 7,680 4,320 192" 300.3" 168.9" 344.5" 26

8K HDTV 1.0 7,680 4,320 192" 428.9" 241.3" 492.1" 18

Tablet 0.5 1,024 768 14" 2.1" 1.6" 2.6" 491

Tablet 0.7 1,024 768 14" 2.9" 2.2" 3.6" 351

Tablet 1.0 1,024 768 14" 4.2" 3.1" 5.2" 246

Tablet 0.5 1,280 800 14" 2.6" 1.6" 3.1" 491

Tablet 0.7 1,280 800 14" 3.6" 2.3" 4.3" 351

Tablet 1.0 1,280 800 14" 5.2" 3.3" 6.1" 246

Tablet 0.5 2,048 1,536 14" 4.2" 3.1" 5.2" 491

Tablet 0.7 2,048 1,536 14" 5.8" 4.4" 7.3" 351

Tablet 1.0 2,048 1,536 14" 8.3" 6.3" 10.4" 246

Tablet 0.5 2,560 1,600 14" 5.2" 3.3" 6.1" 491

Tablet 0.7 2,560 1,600 14" 7.3" 4.6" 8.6" 351

Tablet 1.0 2,560 1,600 14" 10.4" 6.5" 12.3" 246

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