Contrast ratio results

Black
Contrast ratio	4667:1
Monitor model
Submitted	05 Mar 2020 01:44 CET, by 86.206..
Camera model	HUAWEI PRA-LX1
Processing remarks	Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 1: Underexposed. Please increase the shutter time. Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. Warning: image file 2: automatic white balance can cause inaccuracies. Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	501648 cd/m2
Luminance spread	332389 cd/m2 (2 standard deviations)
Exposure value	–8.01 stops (aim for –2 to –3)
Exposure spread	0.99 stops
Area used for calculation	0.377 x 0.373
Camera settings	Exposure time: 1/99996336 ISO: 3200 F-number: 2.2 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	2.34123e+09 cd/m2
Luminance spread	1.20039e+08 cd/m2 (2 standard deviations)
Exposure value	–0.82 stops (aim for –2 to –3)
Exposure spread	0.07 stops
Area used for calculation	0.375 x 0.376
Camera settings	Exposure time: 1/99996336 ISO: 100 F-number: 2.2 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0

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.