Contrast ratio | 141:1 |
---|---|
Monitor model | LG |
Submitted | 13 Feb 2017 16:35 CET, by 81.217.*.* |
Camera model | Sony DSLR-A500 |
Processing remarks | Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. |
Black | |
Screen photo |
|
Luminance | 0.68 cd/m2 |
Luminance spread | 0.15 cd/m2 (2 standard deviations) |
Exposure value | –1.31 stops (aim for –2 to –3) |
Exposure spread | 0.32 stops |
Area used for calculation | 0.993 x 1 |
Camera settings | Exposure time: 1 ISO: 400 F-number: 2.8 Focal length: 75 mm (35 mm equivalent) Exposure compensation: 0 |
White | |
Screen photo |
|
Luminance | 96 cd/m2 |
Luminance spread | 26 cd/m2 (2 standard deviations) |
Exposure value | –6.13 stops (aim for –2 to –3) |
Exposure spread | 0.4 stops |
Area used for calculation | 0.993 x 1 |
Camera settings | Exposure time: 1/4000 ISO: 400 F-number: 2.8 Focal length: 75 mm (35 mm equivalent) Exposure compensation: 0 |
Black at screen edge | |
Screen photo |
|
Luminance | 65 cd/m2 |
Luminance spread | 27 cd/m2 (2 standard deviations) |
Exposure value | –6.69 stops (aim for –2 to –3) |
Exposure spread | 0.6 stops |
Area used for calculation | 0.993 x 1 |
Camera settings | Exposure time: 1/4000 ISO: 400 F-number: 2.8 Focal length: 75 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.