Contrast ratio | 515:1 |
---|---|
Monitor model | Samsung SyncMaster 710N 17" LCD |
Submitted | 21 Aug 2008 07:04 CEST, by 210.10.*.* |
Camera model | Sony DSLR-A100 |
Processing remarks | Warning: image file 1: camera was zoomed in too much. |
Black | |
Screen photo |
|
Luminance | 0.38 cd/m2 |
Luminance spread | 0.09 cd/m2 (2 standard deviations) |
Exposure value | –2.15 stops (aim for –2 to –3) |
Exposure spread | 0.33 stops |
Area used for calculation | 1 x 1 |
Camera settings | Exposure time: 1.6 ISO: 800 F-number: 5 Focal length: 76.2 mm (35 mm equivalent) Exposure compensation: 1 |
White | |
Screen photo |
|
Luminance | 193 cd/m2 |
Luminance spread | 65 cd/m2 (2 standard deviations) |
Exposure value | –2.14 stops (aim for –2 to –3) |
Exposure spread | 0.49 stops |
Area used for calculation | 1 x 1 |
Camera settings | Exposure time: 1/320 ISO: 800 F-number: 5 Focal length: 76.2 mm (35 mm equivalent) Exposure compensation: 0.3 |
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.