Contrast ratio results

Black
Contrast ratio	4206:1
Monitor model
Submitted	07 Dec 2024 05:45 CET, by 182.253..
Camera model	Xiaomi M2101K6G
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 68.6 s (Set EV to +2.8) Note: image file 2: suggested exposure time: 1/61 s (Set EV to -1.0)
Screen photo	[open image]
Luminance	0.02 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–5.28 stops (aim for –2 to –3)
Exposure spread	0.12 stops
Area used for calculation	0.475 x 0.273
Camera settings	Exposure time: 10 ISO: 50 F-number: 1.9 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	67 cd/m2
Luminance spread	2 cd/m2 (2 standard deviations)
Exposure value	–1.47 stops (aim for –2 to –3)
Exposure spread	0.04 stops
Area used for calculation	0.461 x 0.278
Camera settings	Exposure time: 1/30 ISO: 50 F-number: 1.9 Focal length: 25 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.