Contrast ratio results for LG pa75u

Contrast ratio 947:1
Monitor model LG pa75u
Submitted 27 Dec 2013 21:49 CET, by 24.52.*.*
Camera model Canon EOS DIGITAL REBEL
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 5.8 s (Set EV to +2.2)
Note: image file 2: suggested exposure time: 1/160 s (Set EV to -1.7)

Black
Screen photo
Luminance 0.32 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –4.65 stops   (aim for –2 to –3)
Exposure spread 0.1 stops
Area used for calculation 0.403 x 0.432
Camera settings Exposure time: 1.3   ISO: 100   F-number: 3.5
Focal length: 28.6 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 303 cd/m2
Luminance spread 17 cd/m2 (2 standard deviations)
Exposure value –0.79 stops   (aim for –2 to –3)
Exposure spread 0.08 stops
Area used for calculation 0.403 x 0.432
Camera settings Exposure time: 1/50   ISO: 100   F-number: 3.5
Focal length: 28.6 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.