Contrast ratio of AOC 2279

Black
Contrast ratio	700:1 (edge: 682:1)
Monitor model	AOC 2279
Submitted	11 Dec 2015 16:13 CET, by 114.34..
Camera model	Canon EOS M
Processing remarks	Note: image file 1: suggested exposure time: 1.4 s (Set EV to -1.5) Note: image file 3: suggested exposure time: 1.4 s (Set EV to -1.5)
Screen photo	[open image]
Luminance	0.32 cd/m2
Luminance spread	0.09 cd/m2 (2 standard deviations)
Exposure value	–1.02 stops (aim for –2 to –3)
Exposure spread	0.41 stops
Area used for calculation	0.396 x 0.445
Camera settings	Exposure time: 4 ISO: 400 F-number: 3.5 Focal length: 28.5 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	226 cd/m2
Luminance spread	30 cd/m2 (2 standard deviations)
Exposure value	–2.19 stops (aim for –2 to –3)
Exposure spread	0.19 stops
Area used for calculation	0.396 x 0.445
Camera settings	Exposure time: 1/395 ISO: 400 F-number: 3.5 Focal length: 28.5 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.33 cd/m2
Luminance spread	0.09 cd/m2 (2 standard deviations)
Exposure value	–0.98 stops (aim for –2 to –3)
Exposure spread	0.41 stops
Area used for calculation	0.396 x 0.445
Camera settings	Exposure time: 4 ISO: 400 F-number: 3.5 Focal length: 28.5 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.