Contrast ratio | 1604:1 |
---|---|
Monitor model | |
Submitted | 22 Nov 2013 08:41 CET, by 122.170.*.* |
Camera model | Canon EOS 1100D |
Processing remarks | Note: image file 1: suggested exposure time: 3.0 s (Set EV to -1.0) |
Black | |
Screen photo |
|
Luminance | 0.2 cd/m2 |
Luminance spread | 0.15 cd/m2 (2 standard deviations) |
Exposure value | –1.47 stops (aim for –2 to –3) |
Exposure spread | 1.14 stops |
Area used for calculation | 0.393 x 0.442 |
Camera settings | Exposure time: 6.2 ISO: 400 F-number: 4 Focal length: 28.3 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 319 cd/m2 |
Luminance spread | 35 cd/m2 (2 standard deviations) |
Exposure value | –2.08 stops (aim for –2 to –3) |
Exposure spread | 0.16 stops |
Area used for calculation | 0.503 x 0.566 |
Camera settings | Exposure time: 1/395 ISO: 400 F-number: 4 Focal length: 36.2 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.