Contrast ratio | 4320:1 |
---|---|
Monitor model | Dell P2414H |
Submitted | 13 Feb 2014 03:12 CET, by 178.36.*.* |
Camera model | Canon EOS 40D |
Processing remarks | Warning: image file 1: camera was zoomed in too much. |
Black | |
Screen photo |
|
Luminance | 0.01 cd/m2 |
Luminance spread | 0 cd/m2 (2 standard deviations) |
Exposure value | –6.86 stops (aim for –2 to –3) |
Exposure spread | 0.48 stops |
Area used for calculation | 1 x 1 |
Camera settings | Exposure time: 0.3 ISO: 1600 F-number: 2.8 Focal length: 81 mm (35 mm equivalent) Exposure compensation: -2 |
White | |
Screen photo |
|
Luminance | 52 cd/m2 |
Luminance spread | 8 cd/m2 (2 standard deviations) |
Exposure value | –1.42 stops (aim for –2 to –3) |
Exposure spread | 0.23 stops |
Area used for calculation | 1 x 1 |
Camera settings | Exposure time: 1/332 ISO: 1600 F-number: 2.8 Focal length: 81 mm (35 mm equivalent) Exposure compensation: 1 |
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.