Contrast ratio results

Black
Contrast ratio	1973:1
Monitor model
Submitted	05 Jan 2013 22:34 CET, by 79.112..
Camera model	Panasonic DMC-LZ2
Processing remarks	image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 5.6 s (Set EV to +4.1) image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: Image F-number settings are not the same.
Screen photo	[open image]
Luminance	0.05 cd/m2
Luminance spread	0.07 cd/m2 (2 standard deviations)
Exposure value	–6.98 stops (aim for –2 to –3)
Exposure spread	2.11 stops
Area used for calculation	0.534 x 0.534
Camera settings	Exposure time: 1/4 ISO: 400 F-number: 2.8 Focal length: 37 mm (35 mm equivalent) Exposure compensation: -0.33
White
Screen photo	[open image]
Luminance	105 cd/m2
Luminance spread	58 cd/m2 (2 standard deviations)
Exposure value	–1.67 stops (aim for –2 to –3)
Exposure spread	0.83 stops
Area used for calculation	0.534 x 0.534
Camera settings	Exposure time: 1/50 ISO: 400 F-number: 5.6 Focal length: 37 mm (35 mm equivalent) Exposure compensation: -0.33

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.