Contrast ratio results for LG23EA53

Contrast ratio 253:1
Monitor model LG23EA53
Submitted 25 Mar 2021 22:16 CET, by 190.192.*.*
Camera model Fujifilm X-T30
Processing remarks

Note: image file 1: suggested exposure time: 2.3 s (Set EV to +1.2)
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/110 s (Set EV to +1.9)

Black
Screen photo
Luminance 0.2 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –3.72 stops   (aim for –2 to –3)
Exposure spread 0.31 stops
Area used for calculation 0.376 x 0.282
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 23 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 50 cd/m2
Luminance spread 11 cd/m2 (2 standard deviations)
Exposure value –4.4 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 0.376 x 0.282
Camera settings Exposure time: 1/407   ISO: 400   F-number: 3.5
Focal length: 23 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.