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Contrast ratio of LG IPS235

Contrast ratio 870:1 (edge: 1383:1)
Monitor model LG IPS235
Submitted 13 Feb 2012 17:32 CET, by 94.195.*.*
Camera model Panasonic DMC-TZ6
Processing remarks

Note: image file 3: suggested exposure time: 2.4 s (Set EV to +1.2)

Black
Screen photo
[open image]
Luminance 0.28 cd/m2
Luminance spread 0.08 cd/m2 (2 standard deviations)
Exposure value –3.39 stops   (aim for –2 to –3)
Exposure spread 0.43 stops
Area used for calculation 0.361 x 0.361
Camera settings Exposure time: 0.8   ISO: 400   F-number: 3.3
Focal length: 25 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 241 cd/m2
Luminance spread 23 cd/m2 (2 standard deviations)
Exposure value –1.27 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.361 x 0.361
Camera settings Exposure time: 1/250   ISO: 400   F-number: 3.3
Focal length: 25 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.17 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –3.74 stops   (aim for –2 to –3)
Exposure spread 0.34 stops
Area used for calculation 0.361 x 0.361
Camera settings Exposure time: 1   ISO: 400   F-number: 3.3
Focal length: 25 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.