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Contrast ratio of PG258Q 40 Bright

Contrast ratio 938:1
Monitor model PG258Q 40 Bright
Submitted 11 Jul 2019 02:26 CEST, by 172.98.*.*
Camera model samsung SM-G930W8
Processing remarks


Black
Screen photo
[open image]
Luminance 0.26 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –2.24 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 0.345 x 0.46
Camera settings Exposure time: 4   ISO: 50   F-number: 1.7
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 246 cd/m2
Luminance spread 57 cd/m2 (2 standard deviations)
Exposure value –2.81 stops   (aim for –2 to –3)
Exposure spread 0.34 stops
Area used for calculation 0.345 x 0.46
Camera settings Exposure time: 1/350   ISO: 50   F-number: 1.7
Focal length: 26 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.