Contrast ratio results

Black
Contrast ratio	2045:1
Monitor model
Submitted	21 Jan 2013 07:38 CET, by 189.35..
Camera model	Nikon COOLPIX L120
Processing remarks	Warning: image file 1: camera was zoomed in too much. 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 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 32.8 s (Set EV to +5.0) Warning: image file 2: camera was zoomed in too much. Warning: image file 2: automatic white balance can cause inaccuracies. image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Note: image file 2: suggested exposure time: 1/120 s (Set EV to -1.6) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0.05 cd/m2
Luminance spread	0.2 cd/m2 (2 standard deviations)
Exposure value	–7.53 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1 ISO: 200 F-number: 4.5 Focal length: 103 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	96 cd/m2
Luminance spread	11 cd/m2 (2 standard deviations)
Exposure value	–0.86 stops (aim for –2 to –3)
Exposure spread	0.17 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/40 ISO: 400 F-number: 4.5 Focal length: 103 mm (35 mm equivalent) Exposure compensation: 0

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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.