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Contrast ratio of HP w2338h

Contrast ratio 466:1 (edge: 539:1)
Monitor model HP w2338h
Submitted 04 Jan 2020 01:59 CET, by 69.221.*.*
Camera model Sony DSLR-A100
Processing remarks

Note: image file 1: suggested exposure time: 2.3 s (Set EV to -1.1)

Black
Screen photo
[open image]
Luminance 0.2 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –1.37 stops   (aim for –2 to –3)
Exposure spread 0.34 stops
Area used for calculation 0.381 x 0.427
Camera settings Exposure time: 5   ISO: 400   F-number: 3.5
Focal length: 27.4 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 94 cd/m2
Luminance spread 45 cd/m2 (2 standard deviations)
Exposure value –2.47 stops   (aim for –2 to –3)
Exposure spread 0.7 stops
Area used for calculation 0.381 x 0.427
Camera settings Exposure time: 1/200   ISO: 400   F-number: 3.5
Focal length: 27.4 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.17 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –1.58 stops   (aim for –2 to –3)
Exposure spread 0.5 stops
Area used for calculation 0.381 x 0.427
Camera settings Exposure time: 5   ISO: 400   F-number: 3.5
Focal length: 27.4 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.