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Contrast ratio of LG 27UL650-W

Contrast ratio 206:1
Monitor model LG 27UL650-W
Submitted 21 Dec 2020 23:52 CET, by 176.63.*.*
Camera model Sony ILCE-6000
Processing remarks

Note: image file 2: suggested exposure time: 0.5 s (Set EV to -1.0)

Black
Screen photo
[open image]
Luminance 0.94 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –1.47 stops   (aim for –2 to –3)
Exposure spread 0.15 stops
Area used for calculation 0.333 x 0.375
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 194 cd/m2
Luminance spread 42 cd/m2 (2 standard deviations)
Exposure value –2.11 stops   (aim for –2 to –3)
Exposure spread 0.31 stops
Area used for calculation 0.333 x 0.375
Camera settings Exposure time: 1/320   ISO: 400   F-number: 3.5
Focal length: 24 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.