Contrast ratio results for huion

Black
Contrast ratio	5:1
Monitor model	huion
Submitted	07 Jan 2022 07:45 CET, by 186.72..
Camera model	Canon EOS 60D
Processing remarks	Warning: image file 1: camera was zoomed in too much. image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Note: image file 1: suggested exposure time: 1/34 s (Set EV to +1.2) Warning: image file 2: camera was zoomed in too much. image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: image file 2: Overexposed. Please decrease the shutter time. Note: image file 2: suggested exposure time: 1/320 s (Set EV to -2.0) Warning: Image F-number settings are not the same. Warning: Image focal lengths/zoom levels are not the same.
Screen photo	[open image]
Luminance	202 cd/m2
Luminance spread	661 cd/m2 (2 standard deviations)
Exposure value	–3.75 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	1 x 0.5
Camera settings	Exposure time: 1/80 ISO: 100 F-number: 6.3 Focal length: 79.1 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	982 cd/m2
Luminance spread	916 cd/m2 (2 standard deviations)
Exposure value	–0.5 stops (aim for –2 to –3)
Exposure spread	1.46 stops
Area used for calculation	1 x 0.5
Camera settings	Exposure time: 1/80 ISO: 100 F-number: 4.5 Focal length: 58.8 mm (35 mm equivalent) Exposure compensation: 0

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The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.