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Contrast ratio of benq ew2440l

Contrast ratio 1399:1
Monitor model benq ew2440l
Submitted 06 Jun 2015 04:44 CEST, by 174.20.*.*
Camera model Fujifilm FinePix F500EXR
Processing remarks

Note: image file 1: suggested exposure time: 5.0 s (Set EV to +1.3)
Note: image file 2: suggested exposure time: 1/280 s (Set EV to -1.1)

Black
Screen photo
[open image]
Luminance 0.09 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –3.83 stops   (aim for –2 to –3)
Exposure spread 2.08 stops
Area used for calculation 0.657 x 0.657
Camera settings Exposure time: 2   ISO: 400   F-number: 3.5
Focal length: 45.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 129 cd/m2
Luminance spread 38 cd/m2 (2 standard deviations)
Exposure value –1.38 stops   (aim for –2 to –3)
Exposure spread 0.43 stops
Area used for calculation 0.657 x 0.657
Camera settings Exposure time: 1/128   ISO: 400   F-number: 3.5
Focal length: 45.5 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.