| Contrast ratio | 161:1 |
|---|---|
| Monitor model | |
| Submitted | 05 Nov 2018 09:47 CET, by 31.59.*.* |
| Camera model | Canon PowerShot G7 X Mark II |
| Processing remarks | Warning: Image F-number settings are not the same. |
| Black | |
| Screen photo |
|
| Luminance | 0.61 cd/m2 |
| Luminance spread | 0.76 cd/m2 (2 standard deviations) |
| Exposure value | –1.79 stops (aim for –2 to –3) |
| Exposure spread | 2.14 stops |
| Area used for calculation | 0.335 x 0.377 |
| Camera settings | Exposure time: 0.8 ISO: 400 F-number: 2.8 Focal length: 24.1 mm (35 mm equivalent) Exposure compensation: 7 |
| White | |
| Screen photo |
|
| Luminance | 98 cd/m2 |
| Luminance spread | 33 cd/m2 (2 standard deviations) |
| Exposure value | –2.78 stops (aim for –2 to –3) |
| Exposure spread | 0.49 stops |
| Area used for calculation | 0.335 x 0.377 |
| Camera settings | Exposure time: 1/501 ISO: 400 F-number: 2.5 Focal length: 24.1 mm (35 mm equivalent) Exposure compensation: -4 |
![[open image]](upload/cr049/12436a.jpg){kind=link}
![[open image]](upload/cr049/12436b.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.