Contrast ratio | 329747:1 |
---|---|
Monitor model | |
Submitted | 25 Nov 2018 13:51 CET, by 80.95.*.* |
Camera model | HUAWEI PRA-LX1 |
Processing remarks | Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. |
Black | |
Screen photo |
|
Luminance | 52 cd/m2 |
Luminance spread | 9 cd/m2 (2 standard deviations) |
Exposure value | –4.99 stops (aim for –2 to –3) |
Exposure spread | 0.24 stops |
Area used for calculation | 0.376 x 0.376 |
Camera settings | Exposure time: 1/1601 ISO: 400 F-number: 2.2 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 1.717e+07 cd/m2 |
Luminance spread | 7.72352e+06 cd/m2 (2 standard deviations) |
Exposure value | –5.91 stops (aim for –2 to –3) |
Exposure spread | 0.66 stops |
Area used for calculation | 0.376 x 0.376 |
Camera settings | Exposure time: 1/99996336 ISO: 400 F-number: 2.2 Focal length: 26 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.