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Contrast ratio results for LG Flatron W2243S 2

Contrast ratio 6064:1
Monitor model LG Flatron W2243S 2
Submitted 22 May 2019 19:43 CEST, by 78.31.*.*
Camera model Meizu m3 note
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 1: automatic white balance can cause inaccuracies.
image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 3.6 s (Set EV to +5.7)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 2: automatic white balance can cause inaccuracies.
Note: image file 2: suggested exposure time: 1/96 s (Set EV to -1.5)
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.01 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –8.16 stops   (aim for –2 to –3)
Exposure spread 0.94 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/14   ISO: 2800   F-number: 2.2
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 44 cd/m2
Luminance spread 8 cd/m2 (2 standard deviations)
Exposure value –0.96 stops   (aim for –2 to –3)
Exposure spread 0.28 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/33   ISO: 160   F-number: 2.2
Focal length: 0 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.