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Contrast ratio results for Sony Vaio VPC-EC3M1R

Contrast ratio 1185:1 (edge: 1302:1)
Monitor model Sony Vaio VPC-EC3M1R
Submitted 24 Dec 2010 07:41 CET, by 92.47.*.*
Camera model Nikon D90
Processing remarks

Note: image file 1: suggested exposure time: 0.9 s (Set EV to -1.2)
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Note: image file 3: suggested exposure time: 1.0 s (Set EV to -1.1)

Black
Screen photo
[open image]
Luminance 0.34 cd/m2
Luminance spread 0.36 cd/m2 (2 standard deviations)
Exposure value –1.31 stops   (aim for –2 to –3)
Exposure spread 1.69 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 2   ISO: 400   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 402 cd/m2
Luminance spread 85 cd/m2 (2 standard deviations)
Exposure value –2.06 stops   (aim for –2 to –3)
Exposure spread 0.31 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/1000   ISO: 400   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: -1
Black at screen edge
Screen photo
[open image]
Luminance 0.31 cd/m2
Luminance spread 0.34 cd/m2 (2 standard deviations)
Exposure value –1.44 stops   (aim for –2 to –3)
Exposure spread 1.77 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 2   ISO: 400   F-number: 2.8
Focal length: 75 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.