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

Contrast ratio results for LG IPS236V (backlit off/on)

Contrast ratio 3.77859e+06:1
Monitor model LG IPS236V (backlit off/on)
Submitted 31 Oct 2011 19:55 CET, by 178.79.*.*
Camera model Canon PowerShot A630
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 6224.3 s (Set EV to +12.6)

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –15.1 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.49 x 0.49
Camera settings Exposure time: 1   ISO: 408   F-number: 2.8
Focal length: 33.9 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 176 cd/m2
Luminance spread 30 cd/m2 (2 standard deviations)
Exposure value –1.91 stops   (aim for –2 to –3)
Exposure spread 0.25 stops
Area used for calculation 0.49 x 0.49
Camera settings Exposure time: 1/403   ISO: 408   F-number: 2.8
Focal length: 33.9 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.