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Contrast ratio results for Apple MacBook Pro 17

Contrast ratio 18029:1
Monitor model Apple MacBook Pro 17
Submitted 09 Dec 2010 19:26 CET, by 89.132.*.*
Camera model SAMSUNG TECHWIN VLUU NV 7 NV 7
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 15.9 s (Set EV to +12.6)
Warning: image file 2: automatic white balance can cause inaccuracies.

Black
Screen photo
[open image]
Luminance 0.02 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –15.13 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.806 x 0.806
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 55.8 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 336 cd/m2
Luminance spread 101 cd/m2 (2 standard deviations)
Exposure value –1 stops   (aim for –2 to –3)
Exposure spread 0.44 stops
Area used for calculation 0.806 x 0.806
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 55.8 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.