Contrast ratio | 2087:1 |
---|---|
Monitor model | |
Submitted | 21 Dec 2014 08:11 CET, by 114.22.*.* |
Camera model | Panasonic DMC-TZ7 |
Processing remarks | Warning: image file 1: automatic white balance can cause inaccuracies. |
Black | |
Screen photo |
|
Luminance | 0.12 cd/m2 |
Luminance spread | 0.07 cd/m2 (2 standard deviations) |
Exposure value | –4.3 stops (aim for –2 to –3) |
Exposure spread | 0.83 stops |
Area used for calculation | 0.361 x 0.361 |
Camera settings | Exposure time: 1 ISO: 400 F-number: 3.3 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 247 cd/m2 |
Luminance spread | 143 cd/m2 (2 standard deviations) |
Exposure value | –1.47 stops (aim for –2 to –3) |
Exposure spread | 0.86 stops |
Area used for calculation | 0.361 x 0.361 |
Camera settings | Exposure time: 1/200 ISO: 400 F-number: 4 Focal length: 25 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.