Contrast ratio | 1796:1 (edge: 397:1) |
---|---|
Monitor model | Dell S2340m |
Submitted | 25 Nov 2012 07:51 CET, by 209.215.*.* |
Camera model | Nikon D7000 |
Processing remarks | Warning: image file 1: Underexposed. Please increase the shutter time. |
Black | |
Screen photo |
|
Luminance | 0.11 cd/m2 |
Luminance spread | 0.06 cd/m2 (2 standard deviations) |
Exposure value | –4.56 stops (aim for –2 to –3) |
Exposure spread | 0.78 stops |
Area used for calculation | 0.388 x 0.439 |
Camera settings | Exposure time: 4 ISO: 100 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -3 |
White | |
Screen photo |
|
Luminance | 200 cd/m2 |
Luminance spread | 22 cd/m2 (2 standard deviations) |
Exposure value | –1.39 stops (aim for –2 to –3) |
Exposure spread | 0.16 stops |
Area used for calculation | 0.388 x 0.439 |
Camera settings | Exposure time: 1/50 ISO: 100 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -2 |
Black at screen edge | |
Screen photo |
|
Luminance | 0.5 cd/m2 |
Luminance spread | 1.76 cd/m2 (2 standard deviations) |
Exposure value | –2.38 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.388 x 0.439 |
Camera settings | Exposure time: 4 ISO: 100 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -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.