Contrast ratio | 65:1 |
---|---|
Monitor model | |
Submitted | 19 Feb 2014 01:20 CET, by 181.167.*.* |
Camera model | Nikon D90 |
Processing remarks | Warning: using the flash makes no sense. |
Black | |
Screen photo |
|
Luminance | 43 cd/m2 |
Luminance spread | 160 cd/m2 (2 standard deviations) |
Exposure value | –3.22 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 1 x 1 |
Camera settings | Exposure time: 1/30 ISO: 200 F-number: 5.6 Focal length: 217 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 2796 cd/m2 |
Luminance spread | 5691 cd/m2 (2 standard deviations) |
Exposure value | –2.37 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.584 x 0.654 |
Camera settings | Exposure time: 1/800 ISO: 800 F-number: 13 Focal length: 42 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 2805 cd/m2 |
Luminance spread | 7899 cd/m2 (2 standard deviations) |
Exposure value | –2.63 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 1 x 1 |
Camera settings | Exposure time: 1/250 ISO: 400 F-number: 18 Focal length: 300 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.