Contrast ratio | 425:1 (edge: 481:1) |
---|---|
Monitor model | toshiba |
Submitted | 27 Oct 2012 03:15 CEST, by 145.118.*.* |
Camera model | SAMSUNG EX1 |
Processing remarks | Warning: image file 1: automatic white balance can cause inaccuracies. |
Black | |
Screen photo |
|
Luminance | 0.71 cd/m2 |
Luminance spread | 1.87 cd/m2 (2 standard deviations) |
Exposure value | –5.57 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.347 x 0.347 |
Camera settings | Exposure time: 1/4 ISO: 80 F-number: 2.8 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 1 |
White | |
Screen photo |
|
Luminance | 300 cd/m2 |
Luminance spread | 53 cd/m2 (2 standard deviations) |
Exposure value | –2.33 stops (aim for –2 to –3) |
Exposure spread | 0.25 stops |
Area used for calculation | 0.347 x 0.347 |
Camera settings | Exposure time: 1/180 ISO: 80 F-number: 2.8 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 0.62 cd/m2 |
Luminance spread | 1.48 cd/m2 (2 standard deviations) |
Exposure value | –5.75 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.347 x 0.347 |
Camera settings | Exposure time: 1/4 ISO: 80 F-number: 2.8 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.