Contrast ratio results

Contrast ratio 2535:1
Monitor model
Submitted 13 Sep 2016 08:33 CEST, by 92.242.*.*
Camera model CASIO COMPUTER CO.LTD. EX-Z120
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 4.9 s (Set EV to +4.3)
Note: image file 2: suggested exposure time: 1/510 s (Set EV to -1.0)

Black
Screen photo
Luminance 0.1 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –6.8 stops   (aim for –2 to –3)
Exposure spread 1.44 stops
Area used for calculation 0.823 x 0.823
Camera settings Exposure time: 1/4   ISO: 400   F-number: 3.6
Focal length: 57 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 252 cd/m2
Luminance spread 47 cd/m2 (2 standard deviations)
Exposure value –1.46 stops   (aim for –2 to –3)
Exposure spread 0.27 stops
Area used for calculation 0.823 x 0.823
Camera settings Exposure time: 1/250   ISO: 400   F-number: 3.6
Focal length: 57 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.