Contrast ratio of LG IPS231P-BN

Contrast ratio 663:1
Monitor model LG IPS231P-BN
Submitted 08 Mar 2011 19:01 CET, by 91.154.*.*
Camera model Canon EOS 20D
Processing remarks

Note: image file 1: suggested exposure time: 2.7 s (Set EV to +1.0)

Black
Screen photo
Luminance 0.23 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –3.54 stops   (aim for –2 to –3)
Exposure spread 0.69 stops
Area used for calculation 0.369 x 0.416
Camera settings Exposure time: 1.3   ISO: 400   F-number: 4
Focal length: 26.6 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 150 cd/m2
Luminance spread 33 cd/m2 (2 standard deviations)
Exposure value –3.19 stops   (aim for –2 to –3)
Exposure spread 0.32 stops
Area used for calculation 0.369 x 0.416
Camera settings Exposure time: 1/400   ISO: 400   F-number: 4
Focal length: 26.6 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.