Contrast ratio results for BenQ PD2700Q

Black
Contrast ratio	1118:1 (edge: 1054:1)
Monitor model	BenQ PD2700Q
Submitted	13 Feb 2019 16:49 CET, by 80.182..
Camera model	Canon EOS 77D
Processing remarks	Warning: image file 2: automatic white balance can cause inaccuracies.
Screen photo	[open image]
Luminance	0.24 cd/m2
Luminance spread	0.11 cd/m2 (2 standard deviations)
Exposure value	–2.05 stops (aim for –2 to –3)
Exposure spread	0.66 stops
Area used for calculation	0.389 x 0.437
Camera settings	Exposure time: 2.6 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	271 cd/m2
Luminance spread	29 cd/m2 (2 standard deviations)
Exposure value	–1.93 stops (aim for –2 to –3)
Exposure spread	0.15 stops
Area used for calculation	0.389 x 0.437
Camera settings	Exposure time: 1/395 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.26 cd/m2
Luminance spread	0.2 cd/m2 (2 standard deviations)
Exposure value	–1.97 stops (aim for –2 to –3)
Exposure spread	1.21 stops
Area used for calculation	0.389 x 0.437
Camera settings	Exposure time: 2.6 ISO: 400 F-number: 3.5 Focal length: 28 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.