Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio results for Asus VS228H-P

Contrast ratio 769:1 (edge: 704:1)
Monitor model Asus VS228H-P
Submitted 30 Jan 2015 17:05 CET, by 38.98.*.*
Camera model Canon EOS 6D
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 3.0 s (Set EV to +1.6)
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: image file 3: automatic white balance can cause inaccuracies.
Warning: image file 3: Underexposed. Please increase the shutter time.
Note: image file 3: suggested exposure time: 2.9 s (Set EV to +1.5)
Warning: Image ISO settings are not the same.
Warning: Image F-number settings are not the same.

Black
Screen photo
[open image]
Luminance 0.24 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –4.1 stops   (aim for –2 to –3)
Exposure spread 0.64 stops
Area used for calculation 0.549 x 0.617
Camera settings Exposure time: 1   ISO: 160   F-number: 2.8
Focal length: 39.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 188 cd/m2
Luminance spread 78 cd/m2 (2 standard deviations)
Exposure value –2.81 stops   (aim for –2 to –3)
Exposure spread 0.61 stops
Area used for calculation 0.549 x 0.617
Camera settings Exposure time: 1/395   ISO: 200   F-number: 2.8
Focal length: 39.5 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.27 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –4.03 stops   (aim for –2 to –3)
Exposure spread 0.61 stops
Area used for calculation 0.549 x 0.617
Camera settings Exposure time: 1   ISO: 200   F-number: 3.2
Focal length: 39.5 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.