Contrast ratio results

Contrast ratio 4106:1
Monitor model
Submitted 27 Sep 2016 19:57 CEST, by 62.78.*.*
Camera model Sony SLT-A37
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 18.7 s (Set EV to +5.0)
Note: image file 2: suggested exposure time: 1/220 s (Set EV to -1.5)

Black
Screen photo
Luminance 0.02 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –7.46 stops   (aim for –2 to –3)
Exposure spread 1.6 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 0.6   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 101 cd/m2
Luminance spread 12 cd/m2 (2 standard deviations)
Exposure value –1.05 stops   (aim for –2 to –3)
Exposure spread 0.17 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/80   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.