Contrast ratio | 2104:1 |
---|---|
Monitor model | |
Submitted | 21 Dec 2020 08:42 CET, by 70.172.*.* |
Camera model | Apple iPhone XR |
Processing remarks | Warning: image file 1: camera was zoomed in too much. |
Black | |
Screen photo |
|
Luminance | 0.01 cd/m2 |
Luminance spread | 0.01 cd/m2 (2 standard deviations) |
Exposure value | –6.81 stops (aim for –2 to –3) |
Exposure spread | 1.31 stops |
Area used for calculation | 1 x 1 |
Camera settings | Exposure time: 1/4 ISO: 1600 F-number: 1.8 Focal length: 130 mm (35 mm equivalent) Exposure compensation: 1.37 |
White | |
Screen photo |
|
Luminance | 13 cd/m2 |
Luminance spread | 0 cd/m2 (2 standard deviations) |
Exposure value | –0 stops (aim for –2 to –3) |
Exposure spread | 0 stops |
Area used for calculation | 0.345 x 0.46 |
Camera settings | Exposure time: 1/30 ISO: 640 F-number: 1.8 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 4 |
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.