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

Contrast ratio results

Contrast ratio 2574:1
Monitor model
Submitted 04 Nov 2019 00:23 CET, by 86.49.*.*
Camera model HUAWEI VOG-L29
Processing remarks

Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 1: Underexposed. Please increase the shutter time.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 2: Overexposed. Please decrease the shutter time.

Black
Screen photo
[open image]
Luminance 105387 cd/m2
Luminance spread 99952 cd/m2 (2 standard deviations)
Exposure value –11.34 stops   (aim for –2 to –3)
Exposure spread 1.49 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1/99996336   ISO: 800   F-number: 1.6
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: -0.3
White
Screen photo
[open image]
Luminance 2.71234e+08 cd/m2
Luminance spread 126316 cd/m2 (2 standard deviations)
Exposure value –0.01 stops   (aim for –2 to –3)
Exposure spread 0 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1/99996336   ISO: 800   F-number: 1.6
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: -0.3

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.