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

Contrast ratio of Philip

Contrast ratio 216:1
Monitor model Philip
Submitted 20 Oct 2014 19:18 CEST, by 116.102.*.*
Camera model Sony ILCE-6000
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: 4.7 s (Set EV to +1.2)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.25 cd/m2
Luminance spread 0.51 cd/m2 (2 standard deviations)
Exposure value –3.75 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 2   ISO: 400   F-number: 5.6
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 54 cd/m2
Luminance spread 24 cd/m2 (2 standard deviations)
Exposure value –2.9 stops   (aim for –2 to –3)
Exposure spread 0.64 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/60   ISO: 400   F-number: 5.6
Focal length: 75 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.