Contrast ratio results

Black
Contrast ratio	2881:1
Monitor model
Submitted	17 Oct 2011 03:37 CEST, by 76.113..
Camera model	Panasonic DMC-LS80
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 2.3 s (Set EV to +4.2) Warning: image file 2: automatic white balance can cause inaccuracies. Warning: image file 2: Overexposed. Please decrease the shutter time. Note: image file 2: suggested exposure time: 1/150 s (Set EV to -2.4) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0.06 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–6.72 stops (aim for –2 to –3)
Exposure spread	0.78 stops
Area used for calculation	0.434 x 0.601
Camera settings	Exposure time: 1/8 ISO: 800 F-number: 2.8 Focal length: 33 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	183 cd/m2
Luminance spread	4 cd/m2 (2 standard deviations)
Exposure value	–0.13 stops (aim for –2 to –3)
Exposure spread	0.03 stops
Area used for calculation	0.472 x 0.486
Camera settings	Exposure time: 1/30 ISO: 100 F-number: 2.8 Focal length: 33 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.