Contrast ratio results

Black
Contrast ratio	36:1
Monitor model
Submitted	24 Oct 2014 15:42 CEST, by 2.233..
Camera model	Panasonic DMC-FS3
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 2: automatic white balance can cause inaccuracies. image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	3.15 cd/m2
Luminance spread	1.29 cd/m2 (2 standard deviations)
Exposure value	–2.41 stops (aim for –2 to –3)
Exposure spread	0.6 stops
Area used for calculation	0.477 x 0.477
Camera settings	Exposure time: 1/20 ISO: 800 F-number: 2.8 Focal length: 33 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	113 cd/m2
Luminance spread	19 cd/m2 (2 standard deviations)
Exposure value	–1.83 stops (aim for –2 to –3)
Exposure spread	0.25 stops
Area used for calculation	0.477 x 0.477
Camera settings	Exposure time: 1/60 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.