Contrast ratio | 57:1 (edge: 30:1) |
---|---|
Monitor model | |
Submitted | 06 Sep 2018 23:16 CEST, by 140.0.*.* |
Camera model | samsung SM-N910H |
Processing remarks | Warning: image file 3: automatic white balance can cause inaccuracies. |
Black | |
Screen photo |
|
Luminance | 1.84 cd/m2 |
Luminance spread | 3.21 cd/m2 (2 standard deviations) |
Exposure value | –3.25 stops (aim for –2 to –3) |
Exposure spread | 3.87 stops |
Area used for calculation | 0.411 x 0.548 |
Camera settings | Exposure time: 1/17 ISO: 400 F-number: 2.2 Focal length: 31 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 106 cd/m2 |
Luminance spread | 17 cd/m2 (2 standard deviations) |
Exposure value | –1.86 stops (aim for –2 to –3) |
Exposure spread | 0.24 stops |
Area used for calculation | 0.411 x 0.548 |
Camera settings | Exposure time: 1/370 ISO: 400 F-number: 2.2 Focal length: 31 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 3.52 cd/m2 |
Luminance spread | 7.49 cd/m2 (2 standard deviations) |
Exposure value | –2.2 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.411 x 0.548 |
Camera settings | Exposure time: 1/25 ISO: 640 F-number: 2.2 Focal length: 31 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.