Contrast ratio | 667:1 |
---|---|
Monitor model | HP Z Display |
Submitted | 01 Jan 2019 02:02 CET, by 84.1.*.* |
Camera model | Pentax K-5 II s |
Processing remarks | Warning: image file 1: automatic white balance can cause inaccuracies. |
Black | |
Screen photo |
|
Luminance | 0.26 cd/m2 |
Luminance spread | 0.16 cd/m2 (2 standard deviations) |
Exposure value | –3.05 stops (aim for –2 to –3) |
Exposure spread | 0.89 stops |
Area used for calculation | 0.639 x 0.719 |
Camera settings | Exposure time: 0.3 ISO: 1600 F-number: 3.5 Focal length: 46 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 176 cd/m2 |
Luminance spread | 52 cd/m2 (2 standard deviations) |
Exposure value | –3.3 stops (aim for –2 to –3) |
Exposure spread | 0.43 stops |
Area used for calculation | 0.639 x 0.719 |
Camera settings | Exposure time: 1/400 ISO: 1600 F-number: 9 Focal length: 46 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.