Contrast ratio results for SAMSUNG S22C250

Black
Contrast ratio	6:1
Monitor model	SAMSUNG S22C250
Submitted	09 Feb 2024 14:02 CET, by 180.137..
Camera model	Xiaomi MI 8 Lite
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 4.7 s (Set EV to +11.2) Warning: image file 2: Underexposed. Please increase the shutter time. Note: image file 2: suggested exposure time: 0.8 s (Set EV to +8.6) Warning: image file 3: Underexposed. Please increase the shutter time. Note: image file 3: suggested exposure time: 1/8 s (Set EV to +5.9) Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?
Screen photo	[open image]
Luminance	0.03 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–13.68 stops (aim for –2 to –3)
Exposure spread	1.58 stops
Area used for calculation	0.347 x 0.347
Camera settings	Exposure time: 1/500 ISO: 400 F-number: 1.9 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	0.17 cd/m2
Luminance spread	0.26 cd/m2 (2 standard deviations)
Exposure value	–11.14 stops (aim for –2 to –3)
Exposure spread	2.95 stops
Area used for calculation	0.347 x 0.347
Camera settings	Exposure time: 1/500 ISO: 400 F-number: 1.9 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	1.18 cd/m2
Luminance spread	1.02 cd/m2 (2 standard deviations)
Exposure value	–8.35 stops (aim for –2 to –3)
Exposure spread	1.33 stops
Area used for calculation	0.347 x 0.347
Camera settings	Exposure time: 1/500 ISO: 400 F-number: 1.9 Focal length: 24 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.