Contrast ratio results for Benq GW2760HM

Black
Contrast ratio	3771:1 (edge: 3300:1)
Monitor model	Benq GW2760HM
Submitted	02 Jul 2013 20:22 CEST, by 79.112..
Camera model	Nikon COOLPIX P500
Processing remarks	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: 18.4 s (Set EV to +4.5) Warning: image file 2: Overexposed. Please decrease the shutter time. Note: image file 2: suggested exposure time: 1/200 s (Set EV to -0.7) image file 3: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 3: Underexposed. Please increase the shutter time. Note: image file 3: suggested exposure time: 16.1 s (Set EV to +4.3)
Screen photo	[open image]
Luminance	0.02 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–5.7 stops (aim for –2 to –3)
Exposure spread	2.45 stops
Area used for calculation	0.332 x 0.332
Camera settings	Exposure time: 2 ISO: 400 F-number: 3.4 Focal length: 23 mm (35 mm equivalent) Exposure compensation: 1.3
White
Screen photo	[open image]
Luminance	90 cd/m2
Luminance spread	4 cd/m2 (2 standard deviations)
Exposure value	–0.46 stops (aim for –2 to –3)
Exposure spread	0.06 stops
Area used for calculation	0.332 x 0.332
Camera settings	Exposure time: 1/50 ISO: 400 F-number: 3.4 Focal length: 23 mm (35 mm equivalent) Exposure compensation: 1.3
Black at screen edge
Screen photo	[open image]
Luminance	0.03 cd/m2
Luminance spread	0.04 cd/m2 (2 standard deviations)
Exposure value	–5.51 stops (aim for –2 to –3)
Exposure spread	2.89 stops
Area used for calculation	0.332 x 0.332
Camera settings	Exposure time: 2 ISO: 400 F-number: 3.4 Focal length: 23 mm (35 mm equivalent) Exposure compensation: 1.3

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.