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Contrast ratio of LG 34GK950G

Contrast ratio 945:1
Monitor model LG 34GK950G
Submitted 31 Aug 2023 17:23 CEST, by 109.42.*.*
Camera model Nikon D5600
Processing remarks

Note: image file 1: suggested exposure time: 3.4 s (Set EV to +1.4)

Black
Screen photo
[open image]
Luminance 0.48 cd/m2
Luminance spread 0.5 cd/m2 (2 standard deviations)
Exposure value –3.91 stops   (aim for –2 to –3)
Exposure spread 1.64 stops
Area used for calculation 0.597 x 0.672
Camera settings Exposure time: 1.3   ISO: 160   F-number: 4.2
Focal length: 43 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 457 cd/m2
Luminance spread 182 cd/m2 (2 standard deviations)
Exposure value –3.37 stops   (aim for –2 to –3)
Exposure spread 0.58 stops
Area used for calculation 0.597 x 0.672
Camera settings Exposure time: 1/500   ISO: 160   F-number: 4.2
Focal length: 43 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.