Contrast ratio | 1960:1 |
---|---|
Monitor model | |
Submitted | 28 Nov 2016 01:55 CET, by 24.188.*.* |
Camera model | Olympus E-M1 |
Processing remarks | Note: image file 1: suggested exposure time: 11.4 s (Set EV to +1.5) |
Black | |
Screen photo |
|
Luminance | 0.03 cd/m2 |
Luminance spread | 0.03 cd/m2 (2 standard deviations) |
Exposure value | –4.01 stops (aim for –2 to –3) |
Exposure spread | 1.75 stops |
Area used for calculation | 0.696 x 0.783 |
Camera settings | Exposure time: 4 ISO: 400 F-number: 2.8 Focal length: 50.1 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 51 cd/m2 |
Luminance spread | 10 cd/m2 (2 standard deviations) |
Exposure value | –2.39 stops (aim for –2 to –3) |
Exposure spread | 0.29 stops |
Area used for calculation | 0.696 x 0.783 |
Camera settings | Exposure time: 1/160 ISO: 400 F-number: 2.8 Focal length: 50.1 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.