| Contrast ratio | 649:1 |
|---|---|
| Monitor model | |
| Submitted | 21 May 2011 22:08 CEST, by 74.13.*.* |
| Camera model | Nikon E2200 |
| Processing remarks | image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. |
| Black | |
| Screen photo |
|
| Luminance | 0.25 cd/m2 |
| Luminance spread | 0.05 cd/m2 (2 standard deviations) |
| Exposure value | –2.96 stops (aim for –2 to –3) |
| Exposure spread | 0.32 stops |
| Area used for calculation | 0.52 x 0.52 |
| Camera settings | Exposure time: 1.5 ISO: 200 F-number: 2.6 Focal length: 36 mm (35 mm equivalent) Exposure compensation: 2 |
| White | |
| Screen photo |
|
| Luminance | 160 cd/m2 |
| Luminance spread | 33 cd/m2 (2 standard deviations) |
| Exposure value | –2.79 stops (aim for –2 to –3) |
| Exposure spread | 0.29 stops |
| Area used for calculation | 0.52 x 0.52 |
| Camera settings | Exposure time: 1/96 ISO: 50 F-number: 2.6 Focal length: 36 mm (35 mm equivalent) Exposure compensation: -1.3 |
![[open image]](upload/cr016/04130a.jpg){kind=link}
![[open image]](upload/cr016/04130b.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.