Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio of MacBook Pro GeForce 8600M GT 1920x1200

Contrast ratio 662:1
Monitor model MacBook Pro GeForce 8600M GT 1920x1200
Submitted 19 May 2009 09:19 CEST, by 122.106.*.*
Camera model Pentax K20D
Processing remarks


Black
Screen photo
[open image]
Luminance 0.39 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –1.83 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 0.721 x 0.815
Camera settings Exposure time: 1   ISO: 250   F-number: 2
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: 0.7
White
Screen photo
[open image]
Luminance 255 cd/m2
Luminance spread 74 cd/m2 (2 standard deviations)
Exposure value –1.42 stops   (aim for –2 to –3)
Exposure spread 0.42 stops
Area used for calculation 0.721 x 0.815
Camera settings Exposure time: 1/500   ISO: 250   F-number: 2
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: -1
{adcode}

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.