Contrast ratio results for ACER XV253QX

Black
Contrast ratio	1805:1 (edge: 3074:1)
Monitor model	ACER XV253QX
Submitted	10 Dec 2020 00:50 CET, by 212.3..
Camera model	Xiaomi POCO F2 Pro
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 1.8 s (Set EV to +2.8) Warning: image file 3: Underexposed. Please increase the shutter time. Note: image file 3: suggested exposure time: 3.0 s (Set EV to +3.6)
Screen photo	[open image]
Luminance	0.08 cd/m2
Luminance spread	0.04 cd/m2 (2 standard deviations)
Exposure value	–5.32 stops (aim for –2 to –3)
Exposure spread	0.79 stops
Area used for calculation	0.361 x 0.361
Camera settings	Exposure time: 1/4 ISO: 400 F-number: 1.9 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	139 cd/m2
Luminance spread	5 cd/m2 (2 standard deviations)
Exposure value	–1.15 stops (aim for –2 to –3)
Exposure spread	0.05 stops
Area used for calculation	0.361 x 0.361
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 1.9 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.05 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–6.09 stops (aim for –2 to –3)
Exposure spread	0.64 stops
Area used for calculation	0.361 x 0.361
Camera settings	Exposure time: 1/4 ISO: 400 F-number: 1.9 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 0

{adcode}

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.