| Contrast ratio | 5:1 |
|---|---|
| Monitor model | Samsung S22C300 |
| Submitted | 04 Sep 2017 15:03 CEST, by 84.81.*.* |
| Camera model | HTC One |
| 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 | 23 cd/m2 |
| Luminance spread | 8 cd/m2 (2 standard deviations) |
| Exposure value | –2.56 stops (aim for –2 to –3) |
| Exposure spread | 0.47 stops |
| Area used for calculation | 0.372 x 0.493 |
| Camera settings | Exposure time: 1/100 ISO: 250 F-number: 2 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0 |
| White | |
| Screen photo |
|
| Luminance | 127 cd/m2 |
| Luminance spread | 26 cd/m2 (2 standard deviations) |
| Exposure value | –2.12 stops (aim for –2 to –3) |
| Exposure spread | 0.3 stops |
| Area used for calculation | 0.372 x 0.493 |
| Camera settings | Exposure time: 1/203 ISO: 125 F-number: 2 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0 |
![[open image]](upload/cr044/11047a.jpg){kind=link}
![[open image]](upload/cr044/11047b.jpg){kind=link}
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.