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Contrast ratio of Lenovo Legion R27q-30

Contrast ratio 2125:1
Monitor model Lenovo Legion R27q-30
Submitted 23 Jun 2024 04:04 CEST, by 178.36.*.*
Camera model samsung Galaxy A54 5G
Processing remarks

Note: image file 1: suggested exposure time: 2.0 s (Set EV to -0.3)

Black
Screen photo
[open image]
Luminance 0.06 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –3.52 stops   (aim for –2 to –3)
Exposure spread 0.13 stops
Area used for calculation 0.443 x 0.249
Camera settings Exposure time: 1   ISO: 400   F-number: 1.8
Focal length: 23 mm   (35 mm equivalent)
Exposure compensation: -1.3
White
Screen photo
[open image]
Luminance 128 cd/m2
Luminance spread 4 cd/m2 (2 standard deviations)
Exposure value –0.92 stops   (aim for –2 to –3)
Exposure spread 0.04 stops
Area used for calculation 0.443 x 0.249
Camera settings Exposure time: 1/350   ISO: 400   F-number: 1.8
Focal length: 23 mm   (35 mm equivalent)
Exposure compensation: 0.6

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.