Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio results

Contrast ratio 968:1
Monitor model
Submitted 19 May 2024 14:35 CEST, by 36.68.*.*
Camera model Xiaomi M2101K7BNY
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 10.4 s (Set EV to +5.3)
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: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/110 s (Set EV to +1.5)
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.01 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –11.78 stops   (aim for –2 to –3)
Exposure spread 4.17 stops
Area used for calculation 0.376 x 0.375
Camera settings Exposure time: 1/60   ISO: 531   F-number: 1.8
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: -4
White
Screen photo
[open image]
Luminance 9 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –0 stops   (aim for –2 to –3)
Exposure spread 0.01 stops
Area used for calculation 0.376 x 0.375
Camera settings Exposure time: 1/20   ISO: 642   F-number: 1.8
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 4
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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.