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Contrast ratio of HP Compaq LA2405wg

Contrast ratio 1067:1
Monitor model HP Compaq LA2405wg
Submitted 23 May 2019 23:35 CEST, by 73.19.*.*
Camera model Xiaomi Mi MIX 2
Processing remarks

Note: image file 1: suggested exposure time: 7.2 s (Set EV to -1.2)
Note: image file 2: suggested exposure time: 1/150 s (Set EV to -1.3)

Black
Screen photo
[open image]
Luminance 0.04 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –1.35 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.462 x 0.462
Camera settings Exposure time: 16   ISO: 200   F-number: 2
Focal length: 32 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 45 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –1.19 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.462 x 0.462
Camera settings Exposure time: 1/60   ISO: 200   F-number: 2
Focal length: 32 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.