|Submitted||05 Dec 2012 03:07 CET, by 206.248.*.*|
|Camera model||Nikon D40|
image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
|Luminance spread||12 cd/m2 (2 standard deviations)|
|Exposure value||–2.16 stops (aim for –2 to –3)|
|Exposure spread||3.02 stops|
|Area used for calculation||0.597 x 0.304|
|Camera settings||Exposure time: 1/10 ISO: 800 F-number: 5.6|
Focal length: 29 mm (35 mm equivalent)
Exposure compensation: -1
|Luminance spread||2796 cd/m2 (2 standard deviations)|
|Exposure value||–2.08 stops (aim for –2 to –3)|
|Exposure spread||4.02 stops|
|Area used for calculation||0.374 x 0.423|
|Camera settings||Exposure time: 1/250 ISO: 320 F-number: 10|
Focal length: 27 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.