Contrast ratio | 1926:1 (edge: 37396:1) |
---|---|
Monitor model | |
Submitted | 30 May 2018 04:01 CEST, by 24.0.*.* |
Camera model | samsung SM-G955U |
Processing remarks | image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. |
Black | |
Screen photo |
|
Luminance | 0.02 cd/m2 |
Luminance spread | 0.01 cd/m2 (2 standard deviations) |
Exposure value | –1.33 stops (aim for –2 to –3) |
Exposure spread | 0.44 stops |
Area used for calculation | 0.347 x 0.449 |
Camera settings | Exposure time: 10 ISO: 500 F-number: 1.7 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 38 cd/m2 |
Luminance spread | 20 cd/m2 (2 standard deviations) |
Exposure value | –1.97 stops (aim for –2 to –3) |
Exposure spread | 0.79 stops |
Area used for calculation | 0.333 x 0.524 |
Camera settings | Exposure time: 1/30 ISO: 50 F-number: 1.7 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 0 cd/m2 |
Luminance spread | 0 cd/m2 (2 standard deviations) |
Exposure value | –8.25 stops (aim for –2 to –3) |
Exposure spread | 0.58 stops |
Area used for calculation | 1 x 0.206 |
Camera settings | Exposure time: 4 ISO: 200 F-number: 1.7 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.