Contrast ratio | 177:1 |
---|---|
Monitor model | |
Submitted | 03 Jun 2012 02:24 CEST, by 68.103.*.* |
Camera model | SAMSUNG VLUU ST5000 ST5000 TL240 |
Processing remarks | image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. |
Black | |
Screen photo |
|
Luminance | 0.19 cd/m2 |
Luminance spread | 0.29 cd/m2 (2 standard deviations) |
Exposure value | –2.32 stops (aim for –2 to –3) |
Exposure spread | 2.81 stops |
Area used for calculation | 0.448 x 0.448 |
Camera settings | Exposure time: 0.3 ISO: 3200 F-number: 3.3 Focal length: 31 mm (35 mm equivalent) Exposure compensation: 1.3 |
White | |
Screen photo |
|
Luminance | 34 cd/m2 |
Luminance spread | 5 cd/m2 (2 standard deviations) |
Exposure value | –2.36 stops (aim for –2 to –3) |
Exposure spread | 0.2 stops |
Area used for calculation | 0.448 x 0.448 |
Camera settings | Exposure time: 1/19 ISO: 100 F-number: 3.3 Focal length: 31 mm (35 mm equivalent) Exposure compensation: -0.7 |
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.