Contrast ratio results

Black
Contrast ratio	3:1
Monitor model
Submitted	27 Jun 2026 11:04 CEST, by 79.18..
Camera model	Xiaomi M2101K6G
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 2: automatic white balance can cause inaccuracies. image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 2: Underexposed. Please increase the shutter time. Note: image file 2: suggested exposure time: 1/54 s (Set EV to -5.1) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	11 cd/m2
Luminance spread	3 cd/m2 (2 standard deviations)
Exposure value	–5.4 stops (aim for –2 to –3)
Exposure spread	0.37 stops
Area used for calculation	0.384 x 0.301
Camera settings	Exposure time: 1/400 ISO: 273 F-number: 1.9 Focal length: 24 mm (35 mm equivalent) Exposure compensation: -8
White
Screen photo	[open image]
Luminance	30 cd/m2
Luminance spread	2 cd/m2 (2 standard deviations)
Exposure value	–1.23 stops (aim for –2 to –3)
Exposure spread	0.08 stops
Area used for calculation	0.4 x 0.288
Camera settings	Exposure time: 1/400 ISO: 1740 F-number: 1.9 Focal length: 24 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.