| Contrast ratio | 1140:1 |
|---|---|
| Monitor model | VX239 |
| Submitted | 22 May 2022 20:38 CEST, by 82.64.*.* |
| Camera model | OnePlus A6003 |
| Processing remarks | image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. |
| Black | |
| Screen photo |
|
| Luminance | 0.02 cd/m2 |
| Luminance spread | 0.01 cd/m2 (2 standard deviations) |
| Exposure value | –2.71 stops (aim for –2 to –3) |
| Exposure spread | 0.54 stops |
| Area used for calculation | 0.361 x 0.361 |
| Camera settings | Exposure time: 4 ISO: 400 F-number: 1.7 Focal length: 25 mm (35 mm equivalent) Exposure compensation: -0.167 |
| White | |
| Screen photo |
|
| Luminance | 27 cd/m2 |
| Luminance spread | 8 cd/m2 (2 standard deviations) |
| Exposure value | –1.52 stops (aim for –2 to –3) |
| Exposure spread | 0.44 stops |
| Area used for calculation | 0.361 x 0.361 |
| Camera settings | Exposure time: 1/125 ISO: 400 F-number: 1.7 Focal length: 25 mm (35 mm equivalent) Exposure compensation: -0.167 |
![[open image]](upload/cr073/18295a.jpg){kind=link}
![[open image]](upload/cr073/18295b.jpg){kind=link}
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.