| Contrast ratio | 721:1 |
|---|---|
| Monitor model | Samsung UR55 |
| Submitted | 03 Apr 2020 17:35 CEST, by 117.5.*.* |
| Camera model | Fujifilm X-T20 |
| Processing remarks | Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. |
| Black | |
| Screen photo |
|
| Luminance | 0.17 cd/m2 |
| Luminance spread | 0.03 cd/m2 (2 standard deviations) |
| Exposure value | –2.27 stops (aim for –2 to –3) |
| Exposure spread | 0.24 stops |
| Area used for calculation | 0.736 x 0.828 |
| Camera settings | Exposure time: 1/15 ISO: 6400 F-number: 2 Focal length: 53 mm (35 mm equivalent) Exposure compensation: 1.33 |
| White | |
| Screen photo |
|
| Luminance | 120 cd/m2 |
| Luminance spread | 16 cd/m2 (2 standard deviations) |
| Exposure value | –1.67 stops (aim for –2 to –3) |
| Exposure spread | 0.19 stops |
| Area used for calculation | 0.736 x 0.828 |
| Camera settings | Exposure time: 1/7132 ISO: 6400 F-number: 2 Focal length: 53 mm (35 mm equivalent) Exposure compensation: 0.67 |
![[open image]](upload/cr058/14630a.jpg){kind=link}
![[open image]](upload/cr058/14630b.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.