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Contrast ratio results for Samsung syncmaster 2494

Contrast ratio 649:1
Monitor model Samsung syncmaster 2494
Submitted 18 Jun 2016 16:28 CEST, by 141.70.*.*
Camera model Sony NEX-5N
Processing remarks

Note: image file 1: suggested exposure time: 3.6 s (Set EV to -1.5)
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/180 s (Set EV to -2.2)

Black
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –1.01 stops   (aim for –2 to –3)
Exposure spread 0.28 stops
Area used for calculation 0.358 x 0.478
Camera settings Exposure time: 10   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 84 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –0.32 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.358 x 0.478
Camera settings Exposure time: 1/40   ISO: 400   F-number: 3.5
Focal length: 27 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.