Contrast ratio | 186:1 |
---|---|
Monitor model | Acer ET241y |
Submitted | 08 Nov 2018 17:15 CET, by 82.77.*.* |
Camera model | HUAWEI WAS-LX1 |
Processing remarks | Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. |
Black | |
Screen photo |
|
Luminance | 593844 cd/m2 |
Luminance spread | 8.72999e+06 cd/m2 (2 standard deviations) |
Exposure value | –7.77 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.346 x 0.456 |
Camera settings | Exposure time: 1/99996336 ISO: 3200 F-number: 2.2 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 1.10352e+08 cd/m2 |
Luminance spread | 1.7861e+08 cd/m2 (2 standard deviations) |
Exposure value | –2.91 stops (aim for –2 to –3) |
Exposure spread | 3.25 stops |
Area used for calculation | 0.376 x 0.376 |
Camera settings | Exposure time: 1/99996336 ISO: 500 F-number: 2.2 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.