Contrast ratio results

Black
Contrast ratio	9647:1
Monitor model
Submitted	21 May 2010 22:59 CEST, by 77.253..
Camera model	Panasonic DMC-LX3
Processing remarks	image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–3.35 stops (aim for –2 to –3)
Exposure spread	0.76 stops
Area used for calculation	0.347 x 0.347
Camera settings	Exposure time: 10 ISO: 3 F-number: 3.5 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	31 cd/m2
Luminance spread	13 cd/m2 (2 standard deviations)
Exposure value	–3.08 stops (aim for –2 to –3)
Exposure spread	0.62 stops
Area used for calculation	0.347 x 0.347
Camera settings	Exposure time: 1/800 ISO: 3 F-number: 3.5 Focal length: 24 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.