| Contrast ratio | 93:1 |
|---|---|
| Monitor model | Samsung UA40EH530 |
| Submitted | 25 Sep 2022 14:29 CEST, by 101.188.*.* |
| Camera model | Nikon D800 |
| Processing remarks | Warning: Image ISO settings are not the same. |
| Black | |
| Screen photo |
|
| Luminance | 2.09 cd/m2 |
| Luminance spread | 0.83 cd/m2 (2 standard deviations) |
| Exposure value | –2.01 stops (aim for –2 to –3) |
| Exposure spread | 0.58 stops |
| Area used for calculation | 0.695 x 0.781 |
| Camera settings | Exposure time: 1/80 ISO: 6400 F-number: 2.8 Focal length: 50 mm (35 mm equivalent) Exposure compensation: 0 |
| White | |
| Screen photo |
|
| Luminance | 194 cd/m2 |
| Luminance spread | 22 cd/m2 (2 standard deviations) |
| Exposure value | –3.11 stops (aim for –2 to –3) |
| Exposure spread | 0.16 stops |
| Area used for calculation | 0.695 x 0.781 |
| Camera settings | Exposure time: 1/250 ISO: 100 F-number: 2.8 Focal length: 50 mm (35 mm equivalent) Exposure compensation: 0 |
![[open image]](upload/cr074/18594a.jpg){kind=link}
![[open image]](upload/cr074/18594b.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.