Contrast ratio | 2147:1 |
---|---|
Monitor model | Dell XPS 15 9550 (4K IGZO) |
Submitted | 19 Jan 2017 21:05 CET, by 172.73.*.* |
Camera model | Canon EOS REBEL T5i |
Processing remarks | Warning: image file 1: Underexposed. Please increase the shutter time. |
Black | |
Screen photo |
|
Luminance | 0.16 cd/m2 |
Luminance spread | 0.05 cd/m2 (2 standard deviations) |
Exposure value | –5.39 stops (aim for –2 to –3) |
Exposure spread | 0.47 stops |
Area used for calculation | 0.44 x 0.495 |
Camera settings | Exposure time: 0.4 ISO: 400 F-number: 3.5 Focal length: 31.7 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 336 cd/m2 |
Luminance spread | 73 cd/m2 (2 standard deviations) |
Exposure value | –1.62 stops (aim for –2 to –3) |
Exposure spread | 0.32 stops |
Area used for calculation | 0.396 x 0.445 |
Camera settings | Exposure time: 1/395 ISO: 400 F-number: 3.5 Focal length: 28.5 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.