Contrast ratio results for Macbook pro

Contrast ratio 725:1
Monitor model Macbook pro
Submitted 28 Dec 2010 21:48 CET, by 86.138.*.*
Camera model CASIO COMPUTER CO.LTD. EX-Z1050
Processing remarks

Warning: Image F-number settings are not the same.

Black
Screen photo
Luminance 0.48 cd/m2
Luminance spread 0.6 cd/m2 (2 standard deviations)
Exposure value –2.8 stops   (aim for –2 to –3)
Exposure spread 2.09 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 0.5   ISO: 400   F-number: 2.8
Focal length: 38 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 350 cd/m2
Luminance spread 52 cd/m2 (2 standard deviations)
Exposure value –1.29 stops   (aim for –2 to –3)
Exposure spread 0.22 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 1/250   ISO: 400   F-number: 4
Focal length: 38 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.