|Submitted||07 Oct 2012 14:21 CEST, by 79.118.*.*|
|Camera model||Pentax K10D|
Warning: image file 1: Underexposed. Please increase the shutter time.
|Luminance spread||0 cd/m2 (2 standard deviations)|
|Exposure value||–14.31 stops (aim for –2 to –3)|
|Exposure spread||2.27 stops|
|Area used for calculation||0.848 x 0.785|
|Camera settings||Exposure time: 1/8 ISO: 400 F-number: 4.5|
Focal length: 57 mm (35 mm equivalent)
Exposure compensation: 0.7
|Luminance spread||0.01 cd/m2 (2 standard deviations)|
|Exposure value||–7.73 stops (aim for –2 to –3)|
|Exposure spread||0.49 stops|
|Area used for calculation||0.375 x 0.421|
|Camera settings||Exposure time: 0.5 ISO: 400 F-number: 3.5|
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.