Contrast ratio results for Yusmart 198EP

Contrast ratio 461:1 (edge: 532:1)
Monitor model Yusmart 198EP
Submitted 26 May 2014 17:53 CEST, by 178.143.*.*
Camera model Canon EOS 350D DIGITAL
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 2: camera was zoomed in too much.
Warning: image file 3: camera was zoomed in too much.

Black
Screen photo
Luminance 0.3 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –2.84 stops   (aim for –2 to –3)
Exposure spread 0.48 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 25   ISO: 100   F-number: 8
Focal length: 85.9 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 140 cd/m2
Luminance spread 36 cd/m2 (2 standard deviations)
Exposure value –2.55 stops   (aim for –2 to –3)
Exposure spread 0.37 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/15   ISO: 100   F-number: 8
Focal length: 85.9 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
Luminance 0.26 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –3.05 stops   (aim for –2 to –3)
Exposure spread 0.49 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 25   ISO: 100   F-number: 8
Focal length: 85.9 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.