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

Contrast ratio results for XIAOMI MI CURVED 34 (2021)

Contrast ratio 16112:1
Monitor model XIAOMI MI CURVED 34 (2021)
Submitted 30 Dec 2021 01:11 CET, by 94.71.*.*
Camera model samsung SM-G985F
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 9.6 s (Set EV to +3.4)
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Note: image file 2: suggested exposure time: 1/170 s (Set EV to -1.7)
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –5.92 stops   (aim for –2 to –3)
Exposure spread 2.64 stops
Area used for calculation 0.165 x 0.274
Camera settings Exposure time: 0.9   ISO: 2500   F-number: 2.2
Focal length: 13 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 49 cd/m2
Luminance spread 4 cd/m2 (2 standard deviations)
Exposure value –0.75 stops   (aim for –2 to –3)
Exposure spread 0.13 stops
Area used for calculation 0.165 x 0.274
Camera settings Exposure time: 1/50   ISO: 250   F-number: 2.2
Focal length: 13 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.