Contrast ratio results

Contrast ratio 143:1
Monitor model
Submitted 24 Mar 2014 19:48 CET, by 59.95.*.*
Camera model SAMSUNG ES65 ES67 / VLUU ES65 ES67 / S
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Note: image file 1: suggested exposure time: 2.2 s (Set EV to +1.1)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/66 s (Set EV to +2.0)

Black
Screen photo
Luminance 0.21 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –3.63 stops   (aim for –2 to –3)
Exposure spread 0.43 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 30 cd/m2
Luminance spread 4 cd/m2 (2 standard deviations)
Exposure value –4.46 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1/256   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.