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

Contrast ratio of LG L1800P

Contrast ratio 316:1
Monitor model LG L1800P
Submitted 28 Apr 2010 20:53 CEST, by 78.92.*.*
Camera model Nikon COOLPIX S220
Processing remarks

Note: image file 1: suggested exposure time: 1.3 s (Set EV to -0.6)

Black
Screen photo
[open image]
Luminance 0.27 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –3.92 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 0.5   ISO: 400   F-number: 3.1
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: -2
White
Screen photo
[open image]
Luminance 86 cd/m2
Luminance spread 10 cd/m2 (2 standard deviations)
Exposure value –1.51 stops   (aim for –2 to –3)
Exposure spread 0.18 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 1/119   ISO: 400   F-number: 3.1
Focal length: 35 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.