Contrast ratio of Toshiba Satellite L750-11W

Contrast ratio 227:1
Monitor model Toshiba Satellite L750-11W
Submitted 15 Sep 2012 19:42 CEST, by 78.31.*.*
Camera model Canon PowerShot A530
Processing remarks


Black
Screen photo
Luminance 0.7 cd/m2
Luminance spread 1.71 cd/m2 (2 standard deviations)
Exposure value –3.05 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.497 x 0.497
Camera settings Exposure time: 1/4   ISO: 400   F-number: 2.6
Focal length: 34.4 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 158 cd/m2
Luminance spread 28 cd/m2 (2 standard deviations)
Exposure value –2.19 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.497 x 0.497
Camera settings Exposure time: 1/501   ISO: 400   F-number: 2.6
Focal length: 34.4 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.