Contrast ratio results for Acer S200HQL

Black
Contrast ratio	222:1 (edge: 207:1)
Monitor model	Acer S200HQL
Submitted	18 Apr 2018 16:45 CEST, by 72.160..
Camera model	Nikon D5200
Processing remarks	Warning: image file 2: Overexposed. Please decrease the shutter time. Note: image file 2: suggested exposure time: 1/53 s (Set EV to +3.0)
Screen photo	[open image]
Luminance	0.11 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–1.98 stops (aim for –2 to –3)
Exposure spread	0.4 stops
Area used for calculation	0.375 x 0.421
Camera settings	Exposure time: 6 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 8
White
Screen photo	[open image]
Luminance	25 cd/m2
Luminance spread	7 cd/m2 (2 standard deviations)
Exposure value	–0.47 stops (aim for –2 to –3)
Exposure spread	0.4 stops
Area used for calculation	0.375 x 0.421
Camera settings	Exposure time: 1/13 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 5
Black at screen edge
Screen photo	[open image]
Luminance	0.12 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–1.88 stops (aim for –2 to –3)
Exposure spread	0.37 stops
Area used for calculation	0.375 x 0.421
Camera settings	Exposure time: 6 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 2

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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.