# Pixels Per Degree

Use a screen's size and resolution combined with your viewing distance (from your eyes to the screen) to calculate the Pixels Per Degree (PPD).

Enter Screen Information
Size
inches cm
Resolution
>
Distance
Scaling
100%125%150%200%
Hz
30 60 120
HDR
8-bit 10-bit
Curvature
mm Flat
Pixels Per Degree of Vision

PPD -

Horizontal FOV -°

Scaled PPD -

Additional Information

Aspect ratio -

PPI -

Scaled PPI -

Screen Dimensions - inches

Scaled Resolution -

## Notes

Colour Depth = 8-bit, 10-bit, 12-bit. This allows for decreased banding when showing higher brightness images. You can map 8-bit to 1000 Nits Brightness. Mapping 10-bit to 1000 Nits Brightness makes much more sense. The OS and application must explicitly support HDR. Remember, colour gamut is different to colour depth.

The refresh rate, input lag, and pixel response time are all linked. A better pixel response time will reduce motion blur. Better input lag (signal processing + pixel response time) will improve the perceived responsiveness (+ improve accuracy of input tasks like typing and mouse movement) High refresh rate will give a better experience. Variable Refresh Rates may be helpful (see video by battlenonsense) for tear-free + lower input lag. Tear-free is accomplished by VRR, Vertical Sync (Double-buffer), and Vertical Sync (Triple-buffer - two interpretations). An alternative to high, variable refresh rate for motion blur reduction is black-frame insertion, which is more like a CRT. The OS and application must explicitly support VRR.