Contrast ratio | 1403:1 |
---|---|
Monitor model | |
Submitted | 17 Apr 2023 17:19 CEST, by 193.188.*.* |
Camera model | Canon EOS 650D |
Processing remarks | Note: image file 1: suggested exposure time: 5.3 s (Set EV to -1.6) |
Black | |
Screen photo |
|
Luminance | 0.09 cd/m2 |
Luminance spread | 0 cd/m2 (2 standard deviations) |
Exposure value | –0.9 stops (aim for –2 to –3) |
Exposure spread | 0.06 stops |
Area used for calculation | 0.518 x 0.389 |
Camera settings | Exposure time: 16 ISO: 400 F-number: 3.5 Focal length: 31.7 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 123 cd/m2 |
Luminance spread | 19 cd/m2 (2 standard deviations) |
Exposure value | –1.82 stops (aim for –2 to –3) |
Exposure spread | 0.22 stops |
Area used for calculation | 0.518 x 0.389 |
Camera settings | Exposure time: 1/166 ISO: 400 F-number: 3.5 Focal length: 31.7 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.