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

Contrast ratio results for AU8070

Contrast ratio 1249:1
Monitor model AU8070
Submitted 12 Nov 2021 16:17 CET, by 151.56.*.*
Camera model HUAWEI COL-L29
Processing remarks

Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 1: automatic white balance can cause inaccuracies.
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.
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 2: Overexposed. Please decrease the shutter time.

Black
Screen photo
[open image]
Luminance 4.43605e+06 cd/m2
Luminance spread 9.41806e+06 cd/m2 (2 standard deviations)
Exposure value –10.29 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1/99996336   ISO: 50   F-number: 1.8
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 5.5402e+09 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –-0 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: 50   F-number: 1.8
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.