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Contrast ratio of LG pa75u

Contrast ratio 589:1
Monitor model LG pa75u
Submitted 27 Dec 2013 22:20 CET, by 24.52.*.*
Camera model Canon EOS DIGITAL REBEL
Processing remarks


Black
Screen photo
[open image]
Luminance 0.5 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –3.39 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.387 x 0.436
Camera settings Exposure time: 2   ISO: 100   F-number: 3.5
Focal length: 27.9 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 293 cd/m2
Luminance spread 49 cd/m2 (2 standard deviations)
Exposure value –3.16 stops   (aim for –2 to –3)
Exposure spread 0.24 stops
Area used for calculation 0.387 x 0.436
Camera settings Exposure time: 1/250   ISO: 100   F-number: 3.5
Focal length: 27.9 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.