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Contrast ratio of fx2490hd

Contrast ratio 715:1
Monitor model fx2490hd
Submitted 30 May 2019 22:56 CEST, by 179.35.*.*
Camera model Canon EOS Kiss X9
Processing remarks


Black
Screen photo
[open image]
Luminance 0.19 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –2.2 stops   (aim for –2 to –3)
Exposure spread 0.8 stops
Area used for calculation 0.41 x 0.461
Camera settings Exposure time: 2   ISO: 800   F-number: 4
Focal length: 29.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 133 cd/m2
Luminance spread 47 cd/m2 (2 standard deviations)
Exposure value –1.72 stops   (aim for –2 to –3)
Exposure spread 0.51 stops
Area used for calculation 0.41 x 0.461
Camera settings Exposure time: 1/256   ISO: 800   F-number: 4
Focal length: 29.5 mm   (35 mm equivalent)
Exposure compensation: 0
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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.