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

Contrast ratio results for PANDA PE24QA2

Contrast ratio 3:1
Monitor model PANDA PE24QA2
Submitted 12 Nov 2019 15:32 CET, by 114.221.*.*
Camera model HUAWEI STF-AL10
Processing remarks

Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 3: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 3: Underexposed. Please increase the shutter time.
Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?

Black
Screen photo
[open image]
Luminance 1.07817e+08 cd/m2
Luminance spread 7.26058e+07 cd/m2 (2 standard deviations)
Exposure value –3.26 stops   (aim for –2 to –3)
Exposure spread 1.01 stops
Area used for calculation 0.358 x 0.477
Camera settings Exposure time: 1/99996336   ISO: 400   F-number: 2.2
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 3.32251e+08 cd/m2
Luminance spread 4.19871e+07 cd/m2 (2 standard deviations)
Exposure value –1.64 stops   (aim for –2 to –3)
Exposure spread 0.18 stops
Area used for calculation 0.358 x 0.477
Camera settings Exposure time: 1/99996336   ISO: 400   F-number: 2.2
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 4.94103e+07 cd/m2
Luminance spread 4.57043e+07 cd/m2 (2 standard deviations)
Exposure value –4.39 stops   (aim for –2 to –3)
Exposure spread 1.44 stops
Area used for calculation 0.358 x 0.477
Camera settings Exposure time: 1/99996336   ISO: 400   F-number: 2.2
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.