Contrast ratio results for u3007WHP-HC

Black
Contrast ratio	1456:1
Monitor model	u3007WHP-HC
Submitted	13 Feb 2013 04:13 CET, by 216.58..
Camera model	Samsung Galaxy Nexus
Processing remarks	Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 3.3 s (Set EV to +5.6) Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Note: image file 2: suggested exposure time: 1/87 s (Set EV to -1.5) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0.05 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–8.11 stops (aim for –2 to –3)
Exposure spread	0.73 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 1/15 ISO: 640 F-number: 2.6 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	71 cd/m2
Luminance spread	7 cd/m2 (2 standard deviations)
Exposure value	–0.96 stops (aim for –2 to –3)
Exposure spread	0.14 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 1/30 ISO: 125 F-number: 2.6 Focal length: 0 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.