| Contrast ratio | 1415:1 |
|---|---|
| Monitor model | |
| Submitted | 03 Dec 2017 18:37 CET, by 77.223.*.* |
| Camera model | Olympus E-510 |
| Processing remarks | Note: image file 1: suggested exposure time: 28.1 s (Set EV to +1.5) |
| Black | |
| Screen photo |
|
| Luminance | 0.04 cd/m2 |
| Luminance spread | 0.02 cd/m2 (2 standard deviations) |
| Exposure value | –3.99 stops (aim for –2 to –3) |
| Exposure spread | 0.61 stops |
| Area used for calculation | 0.462 x 0.462 |
| Camera settings | Exposure time: 10 ISO: 400 F-number: 5.6 Focal length: 32 mm (35 mm equivalent) Exposure compensation: 0 |
| White | |
| Screen photo |
|
| Luminance | 60 cd/m2 |
| Luminance spread | 6 cd/m2 (2 standard deviations) |
| Exposure value | –2.17 stops (aim for –2 to –3) |
| Exposure spread | 0.14 stops |
| Area used for calculation | 0.493 x 0.493 |
| Camera settings | Exposure time: 1/40 ISO: 400 F-number: 5.6 Focal length: 34.1 mm (35 mm equivalent) Exposure compensation: 0 |
![[open image]](upload/cr045/11340a.jpg){kind=link}
![[open image]](upload/cr045/11340b.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.