| Contrast ratio | 872:1 |
|---|---|
| Monitor model | viewsonic vx2457 |
| Submitted | 17 Jan 2017 06:46 CET, by 154.58.*.* |
| Camera model | Sony DSC-RX100M3 |
| Processing remarks | Note: image file 1: suggested exposure time: 2.8 s (Set EV to +1.6) |
| Black | |
| Screen photo |
|
| Luminance | 0.01 cd/m2 |
| Luminance spread | 0 cd/m2 (2 standard deviations) |
| Exposure value | –1.39 stops (aim for –2 to –3) |
| Exposure spread | 0.24 stops |
| Area used for calculation | 0.333 x 0.375 |
| Camera settings | Exposure time: 6 ISO: 2500 F-number: 1.8 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 2.7 |
| White | |
| Screen photo |
|
| Luminance | 6 cd/m2 |
| Luminance spread | 1 cd/m2 (2 standard deviations) |
| Exposure value | –1.85 stops (aim for –2 to –3) |
| Exposure spread | 0.28 stops |
| Area used for calculation | 0.333 x 0.375 |
| Camera settings | Exposure time: 1/400 ISO: 5000 F-number: 1.8 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 0 |
![[open image]](upload/cr041/10429a.jpg){kind=link}
![[open image]](upload/cr041/10429b.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.