Contrast ratio | 76:1 |
---|---|
Monitor model | BenQ GW2780 |
Submitted | 08 Jul 2020 17:58 CEST, by 77.115.*.* |
Camera model | Canon EOS 250D |
Processing remarks | image file 3: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. |
Black | |
Screen photo |
|
Luminance | 2.98 cd/m2 |
Luminance spread | 0.5 cd/m2 (2 standard deviations) |
Exposure value | –2.79 stops (aim for –2 to –3) |
Exposure spread | 0.24 stops |
Area used for calculation | 0.537 x 0.605 |
Camera settings | Exposure time: 1/6 ISO: 400 F-number: 4 Focal length: 38.7 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 226 cd/m2 |
Luminance spread | 50 cd/m2 (2 standard deviations) |
Exposure value | –2.58 stops (aim for –2 to –3) |
Exposure spread | 0.32 stops |
Area used for calculation | 0.537 x 0.605 |
Camera settings | Exposure time: 1/395 ISO: 400 F-number: 4 Focal length: 38.7 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 195 cd/m2 |
Luminance spread | 371 cd/m2 (2 standard deviations) |
Exposure value | –1.79 stops (aim for –2 to –3) |
Exposure spread | 4.25 stops |
Area used for calculation | 0.515 x 0.58 |
Camera settings | Exposure time: 1/197 ISO: 400 F-number: 4 Focal length: 37.1 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.