Contrast ratio results

Contrast ratio 815:1
Monitor model
Submitted 23 Dec 2015 22:06 CET, by 84.195.*.*
Camera model Nikon D7100
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 2: camera was zoomed in too much.
Note: image file 2: suggested exposure time: 1/510 s (Set EV to -1.5)

Black
Screen photo
Luminance 0.55 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –2.16 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 2   ISO: 400   F-number: 4.8
Focal length: 200 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 448 cd/m2
Luminance spread 60 cd/m2 (2 standard deviations)
Exposure value –0.98 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/180   ISO: 400   F-number: 4.8
Focal length: 200 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.