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Contrast ratio results for LG 27EA33

Contrast ratio 676:1
Monitor model LG 27EA33
Submitted 03 Oct 2014 19:44 CEST, by 37.150.*.*
Camera model Canon DIGITAL IXUS 70
Processing remarks

Note: image file 2: suggested exposure time: 1/140 s (Set EV to -0.8)
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.12 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –2.21 stops   (aim for –2 to –3)
Exposure spread 0.48 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 15   ISO: 80   F-number: 2.8
Focal length: 34.3 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 81 cd/m2
Luminance spread 8 cd/m2 (2 standard deviations)
Exposure value –0.72 stops   (aim for –2 to –3)
Exposure spread 0.13 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 1/40   ISO: 200   F-number: 2.8
Focal length: 34.3 mm   (35 mm equivalent)
Exposure compensation: 1

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.