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Contrast ratio of LP154WX4-TLC8

Contrast ratio 273:1
Monitor model LP154WX4-TLC8
Submitted 26 Feb 2009 16:12 CET, by 190.50.*.*
Camera model Sony DSC-W1
Processing remarks

Note: image file 2: suggested exposure time: 1/120 s (Set EV to -1.2)

Black
Screen photo
[open image]
Luminance 0.51 cd/m2
Luminance spread 1 cd/m2 (2 standard deviations)
Exposure value –3.34 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.552 x 0.552
Camera settings Exposure time: 1.3   ISO: 100   F-number: 2.8
Focal length: 38.2 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 139 cd/m2
Luminance spread 22 cd/m2 (2 standard deviations)
Exposure value –1.27 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.552 x 0.552
Camera settings Exposure time: 1/50   ISO: 100   F-number: 2.8
Focal length: 38.2 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.