Contrast ratio | 83:1 |
---|---|
Monitor model | |
Submitted | 09 Mar 2009 01:59 CET, by 200.209.*.* |
Camera model | Samsung Techwin KENOX S860 / Samsung S8 |
Processing remarks | image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. |
Black | |
Screen photo |
|
Luminance | 0.02 cd/m2 |
Luminance spread | 0.01 cd/m2 (2 standard deviations) |
Exposure value | –6.07 stops (aim for –2 to –3) |
Exposure spread | 0.64 stops |
Area used for calculation | 0.549 x 0.549 |
Camera settings | Exposure time: 1 ISO: 400 F-number: 2.8 Focal length: 38 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 2.05 cd/m2 |
Luminance spread | 0 cd/m2 (2 standard deviations) |
Exposure value | –0 stops (aim for –2 to –3) |
Exposure spread | 0 stops |
Area used for calculation | 0.708 x 0.708 |
Camera settings | Exposure time: 1 ISO: 400 F-number: 3.1 Focal length: 49 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 1.83 cd/m2 |
Luminance spread | 0.71 cd/m2 (2 standard deviations) |
Exposure value | –0.17 stops (aim for –2 to –3) |
Exposure spread | 0.57 stops |
Area used for calculation | 0.708 x 0.708 |
Camera settings | Exposure time: 1 ISO: 400 F-number: 3.1 Focal length: 49 mm (35 mm equivalent) Exposure compensation: 0 |
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.