Contrast ratio results

Black
Contrast ratio	38635:1
Monitor model
Submitted	24 Mar 2008 13:11 CET, by 82.114..
Camera model	Olympus E-500
Processing remarks	Warning: using the flash makes no sense. Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 137.5 s (Set EV to +14.6) Warning: using the flash makes no sense. Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–17.09 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.528 x 0.633
Camera settings	Exposure time: 1/180 ISO: 800 F-number: 4.5 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	108 cd/m2
Luminance spread	9 cd/m2 (2 standard deviations)
Exposure value	–1.86 stops (aim for –2 to –3)
Exposure spread	0.11 stops
Area used for calculation	0.528 x 0.633
Camera settings	Exposure time: 1/180 ISO: 800 F-number: 4.5 Focal length: 0 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.