| Contrast ratio | 3025:1 |
|---|---|
| Monitor model | Samsung EH4003 Series |
| Submitted | 16 Aug 2019 09:06 CEST, by 96.59.*.* |
| Camera model | samsung SAMSUNG-SM-G891A |
| Processing remarks | Note: image file 2: suggested exposure time: 1/490 s (Set EV to -1.4) |
| Black | |
| Screen photo |
|
| Luminance | 0.02 cd/m2 |
| Luminance spread | 0.01 cd/m2 (2 standard deviations) |
| Exposure value | –2.13 stops (aim for –2 to –3) |
| Exposure spread | 0.52 stops |
| Area used for calculation | 0.345 x 0.46 |
| Camera settings | Exposure time: 8 ISO: 400 F-number: 1.7 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0 |
| White | |
| Screen photo |
|
| Luminance | 53 cd/m2 |
| Luminance spread | 9 cd/m2 (2 standard deviations) |
| Exposure value | –1.06 stops (aim for –2 to –3) |
| Exposure spread | 0.25 stops |
| Area used for calculation | 0.345 x 0.46 |
| Camera settings | Exposure time: 1/180 ISO: 400 F-number: 1.7 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0 |
![[open image]](upload/cr054/13533a.jpg){kind=link}
![[open image]](upload/cr054/13533b.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.