| Contrast ratio | 623:1 |
|---|---|
| Monitor model | NEC Multisync LCD 175vx |
| Submitted | 25 Jan 2013 09:28 CET, by 172.12.*.* |
| Camera model | Olympus XZ-1 |
| Processing remarks | Warning: using the flash makes no sense. |
| Black | |
| Screen photo |
|
| Luminance | 0.09 cd/m2 |
| Luminance spread | 0.01 cd/m2 (2 standard deviations) |
| Exposure value | –3.49 stops (aim for –2 to –3) |
| Exposure spread | 0.23 stops |
| Area used for calculation | 0.458 x 0.343 |
| Camera settings | Exposure time: 1 ISO: 400 F-number: 2.2 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0 |
| White | |
| Screen photo |
|
| Luminance | 57 cd/m2 |
| Luminance spread | 8 cd/m2 (2 standard deviations) |
| Exposure value | –2.85 stops (aim for –2 to –3) |
| Exposure spread | 0.21 stops |
| Area used for calculation | 0.458 x 0.343 |
| Camera settings | Exposure time: 1/400 ISO: 400 F-number: 2.2 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0 |
![[open image]](upload/cr024/06147a.jpg){kind=link}
![[open image]](upload/cr024/06147b.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.