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Contrast ratio of LG 27GL83A-B

Contrast ratio 719:1
Monitor model LG 27GL83A-B
Submitted 11 Sep 2020 00:21 CEST, by 212.79.*.*
Camera model motorola one zoom
Processing remarks

Note: image file 1: suggested exposure time: 0.5 s (Set EV to +1.1)

Black
Screen photo
[open image]
Luminance 0.05 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –3.56 stops   (aim for –2 to –3)
Exposure spread 2.21 stops
Area used for calculation 0.358 x 0.477
Camera settings Exposure time: 1/4   ISO: 1600   F-number: 1.7
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 38 cd/m2
Luminance spread 2 cd/m2 (2 standard deviations)
Exposure value –0.52 stops   (aim for –2 to –3)
Exposure spread 0.09 stops
Area used for calculation 0.358 x 0.477
Camera settings Exposure time: 1/350   ISO: 1600   F-number: 1.7
Focal length: 27 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.