Contrast ratio results for BENQ 2700HD

Black
Contrast ratio	20462:1
Monitor model	BENQ 2700HD
Submitted	13 Jul 2013 21:47 CEST, by 95.72..
Camera model	SANYO Electric Co.Ltd. C6
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Note: image file 1: suggested exposure time: 1/75 s (Set EV to -1.1) Warning: image file 2: automatic white balance can cause inaccuracies. Warning: image file 2: Underexposed. Please increase the shutter time. Note: image file 2: suggested exposure time: 131.7 s (Set EV to +8.0) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–10.54 stops (aim for –2 to –3)
Exposure spread	2.44 stops
Area used for calculation	0.592 x 0.592
Camera settings	Exposure time: 0.5 ISO: 200 F-number: 3.5 Focal length: 41 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	144 cd/m2
Luminance spread	20 cd/m2 (2 standard deviations)
Exposure value	–1.37 stops (aim for –2 to –3)
Exposure spread	0.2 stops
Area used for calculation	0.592 x 0.592
Camera settings	Exposure time: 1/34 ISO: 96 F-number: 3.5 Focal length: 41 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.