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Contrast ratio of LG E2242

Contrast ratio 1138:1
Monitor model LG E2242
Submitted 11 May 2014 21:51 CEST, by 200.123.*.*
Camera model Canon EOS REBEL T3
Processing remarks

Note: image file 1: suggested exposure time: 3.7 s (Set EV to +1.2)

Black
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –3.7 stops   (aim for –2 to –3)
Exposure spread 0.64 stops
Area used for calculation 0.393 x 0.442
Camera settings Exposure time: 1.6   ISO: 400   F-number: 3.5
Focal length: 28.3 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 143 cd/m2
Luminance spread 73 cd/m2 (2 standard deviations)
Exposure value –1.6 stops   (aim for –2 to –3)
Exposure spread 0.76 stops
Area used for calculation 0.393 x 0.442
Camera settings Exposure time: 1/166   ISO: 400   F-number: 3.5
Focal length: 28.3 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.