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

Contrast ratio of Sony Vaio VPC-EC3M1R

Contrast ratio 186:1 (edge: 429:1)
Monitor model Sony Vaio VPC-EC3M1R
Submitted 24 Dec 2010 06:29 CET, by 92.47.*.*
Camera model Nikon D90
Processing remarks


Black
Screen photo
[open image]
Luminance 2.04 cd/m2
Luminance spread 2.53 cd/m2 (2 standard deviations)
Exposure value –2.72 stops   (aim for –2 to –3)
Exposure spread 2.1 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/4   ISO: 200   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 380 cd/m2
Luminance spread 91 cd/m2 (2 standard deviations)
Exposure value –2.14 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/500   ISO: 200   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.89 cd/m2
Luminance spread 1.58 cd/m2 (2 standard deviations)
Exposure value –2.92 stops   (aim for –2 to –3)
Exposure spread 4.09 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 0.5   ISO: 200   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.