Contrast ratio results

Black
Contrast ratio	3329:1
Monitor model
Submitted	07 Dec 2024 05:38 CET, by 182.253..
Camera model	Xiaomi M2101K6G
Processing remarks	image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 1/4 s (Set EV to +1.7) Note: image file 2: suggested exposure time: 1/160 s (Set EV to -1.6) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0.02 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–4.23 stops (aim for –2 to –3)
Exposure spread	0.44 stops
Area used for calculation	0.358 x 0.366
Camera settings	Exposure time: 1/14 ISO: 12800 F-number: 1.9 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	60 cd/m2
Luminance spread	4 cd/m2 (2 standard deviations)
Exposure value	–0.85 stops (aim for –2 to –3)
Exposure spread	0.09 stops
Area used for calculation	0.361 x 0.361
Camera settings	Exposure time: 1/50 ISO: 143 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.