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

Contrast ratio results

Contrast ratio 101:1
Monitor model
Submitted 14 Mar 2014 21:56 CET, by 117.198.*.*
Camera model SAMSUNG ES65 ES67 / VLUU ES65 ES67 / S
Processing remarks

Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/63 s (Set EV to +2.9)

Black
Screen photo
[open image]
Luminance 0.29 cd/m2
Luminance spread 0.08 cd/m2 (2 standard deviations)
Exposure value –3.19 stops   (aim for –2 to –3)
Exposure spread 0.41 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
[open image]
Luminance 29 cd/m2
Luminance spread 5 cd/m2 (2 standard deviations)
Exposure value –5.41 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1/471   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.