Contrast ratio | 2704:1 (edge: 13985:1) |
---|---|
Monitor model | 248e9qhsb |
Submitted | 15 Feb 2020 03:25 CET, by 45.63.*.* |
Camera model | HUAWEI HLK-AL00 |
Processing remarks | Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. |
Black | |
Screen photo |
|
Luminance | 60561 cd/m2 |
Luminance spread | 146301 cd/m2 (2 standard deviations) |
Exposure value | –13.48 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.331 x 0.539 |
Camera settings | Exposure time: 1/99996336 ISO: 400 F-number: 1.8 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 1.63767e+08 cd/m2 |
Luminance spread | 6.39404e+07 cd/m2 (2 standard deviations) |
Exposure value | –2.08 stops (aim for –2 to –3) |
Exposure spread | 0.57 stops |
Area used for calculation | 0.331 x 0.539 |
Camera settings | Exposure time: 1/99996336 ISO: 400 F-number: 1.8 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 11710 cd/m2 |
Luminance spread | 15159 cd/m2 (2 standard deviations) |
Exposure value | –15.85 stops (aim for –2 to –3) |
Exposure spread | 2.22 stops |
Area used for calculation | 0.719 x 0.248 |
Camera settings | Exposure time: 1/99996336 ISO: 400 F-number: 1.8 Focal length: 26 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.