Contrast ratio | 2341:1 |
---|---|
Monitor model | |
Submitted | 31 Jul 2013 07:13 CEST, by 125.212.*.* |
Camera model | Panasonic DMC-LX3 |
Processing remarks | Warning: image file 1: Underexposed. Please increase the shutter time. |
Black | |
Screen photo |
|
Luminance | 0.04 cd/m2 |
Luminance spread | 0.16 cd/m2 (2 standard deviations) |
Exposure value | –9.97 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.333 x 0.375 |
Camera settings | Exposure time: 1/50 ISO: 400 F-number: 2 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 100 cd/m2 |
Luminance spread | 10 cd/m2 (2 standard deviations) |
Exposure value | –1.78 stops (aim for –2 to –3) |
Exposure spread | 0.15 stops |
Area used for calculation | 0.392 x 0.294 |
Camera settings | Exposure time: 1/400 ISO: 400 F-number: 2 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 42 cd/m2 |
Luminance spread | 82 cd/m2 (2 standard deviations) |
Exposure value | –3.02 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.333 x 0.375 |
Camera settings | Exposure time: 1/400 ISO: 400 F-number: 2 Focal length: 24 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.