Contrast ratio results

Black
Contrast ratio	176:1
Monitor model
Submitted	21 Jul 2011 11:41 CEST, by 161.53..
Camera model	Olympus E-500
Processing remarks	Warning: using the flash makes no sense. image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Note: image file 1: suggested exposure time: 3.3 s (Set EV to +1.0) Warning: using the flash makes no sense. image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Screen photo	[open image]
Luminance	0.14 cd/m2
Luminance spread	0.25 cd/m2 (2 standard deviations)
Exposure value	–3.55 stops (aim for –2 to –3)
Exposure spread	4.12 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1.6 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	25 cd/m2
Luminance spread	10 cd/m2 (2 standard deviations)
Exposure value	–3.41 stops (aim for –2 to –3)
Exposure spread	0.61 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1/100 ISO: 400 F-number: 3.5 Focal length: 28 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.