| Contrast ratio | 333:1 |
|---|---|
| Monitor model | Benq FP71G+ |
| Submitted | 03 Jan 2009 03:31 CET, by 85.197.*.* |
| Camera model | Fujifilm FinePix F31fd |
| Processing remarks | Note: image file 2: suggested exposure time: 1/200 s (Set EV to +0.1) |
| Black | |
| Screen photo |
|
| Luminance | 0.18 cd/m2 |
| Luminance spread | 0.05 cd/m2 (2 standard deviations) |
| Exposure value | –2.2 stops (aim for –2 to –3) |
| Exposure spread | 0.42 stops |
| Area used for calculation | 0.52 x 0.52 |
| Camera settings | Exposure time: 1/4 ISO: 3 F-number: 2.8 Focal length: 36 mm (35 mm equivalent) Exposure compensation: 0 |
| White | |
| Screen photo |
|
| Luminance | 61 cd/m2 |
| Luminance spread | 14 cd/m2 (2 standard deviations) |
| Exposure value | –0.63 stops (aim for –2 to –3) |
| Exposure spread | 0.33 stops |
| Area used for calculation | 0.52 x 0.52 |
| Camera settings | Exposure time: 1/55 ISO: 3 F-number: 8 Focal length: 36 mm (35 mm equivalent) Exposure compensation: 2 |
![[open image]](upload/cr003/00990a.jpg){kind=link}
![[open image]](upload/cr003/00990b.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.