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Contrast ratio results for Crossover 27Q LED-P

Contrast ratio 1122:1
Monitor model Crossover 27Q LED-P
Submitted 06 Oct 2012 23:28 CEST, by 217.118.*.*
Camera model Panasonic DMC-TZ7
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.

Black
Screen photo
[open image]
Luminance 0.12 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –3.07 stops   (aim for –2 to –3)
Exposure spread 0.38 stops
Area used for calculation 0.751 x 0.751
Camera settings Exposure time: 15   ISO: 80   F-number: 3.8
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 138 cd/m2
Luminance spread 19 cd/m2 (2 standard deviations)
Exposure value –2.17 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 0.751 x 0.751
Camera settings Exposure time: 1/40   ISO: 80   F-number: 3.8
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: -0.33

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.