Contrast ratio | 8857:1 |
---|---|
Monitor model | LG 32lc |
Submitted | 21 Dec 2021 00:51 CET, by 205.201.*.* |
Camera model | Canon PowerShot A630 |
Processing remarks | Warning: image file 1: Underexposed. Please increase the shutter time. |
Black | |
Screen photo |
|
Luminance | 0 cd/m2 |
Luminance spread | 0 cd/m2 (2 standard deviations) |
Exposure value | –11.25 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.49 x 0.49 |
Camera settings | Exposure time: 1 ISO: 400 F-number: 2.8 Focal length: 33.9 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 6 cd/m2 |
Luminance spread | 2 cd/m2 (2 standard deviations) |
Exposure value | –5.79 stops (aim for –2 to –3) |
Exposure spread | 0.56 stops |
Area used for calculation | 0.49 x 0.49 |
Camera settings | Exposure time: 1/202 ISO: 400 F-number: 2.8 Focal length: 33.9 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.