Contrast ratio results for AOC Q27G4

Black
Contrast ratio	1048:1 (edge: 1011:1)
Monitor model	AOC Q27G4
Submitted	29 Mar 2025 10:15 CET, by 27.37..
Camera model	Sony ZV-E10
Processing remarks	Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Screen photo	[open image]
Luminance	0.27 cd/m2
Luminance spread	0.05 cd/m2 (2 standard deviations)
Exposure value	–2.52 stops (aim for –2 to –3)
Exposure spread	0.24 stops
Area used for calculation	0.535 x 0.533
Camera settings	Exposure time: 0.4 ISO: 400 F-number: 1.7 Focal length: 37 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	283 cd/m2
Luminance spread	50 cd/m2 (2 standard deviations)
Exposure value	–1.13 stops (aim for –2 to –3)
Exposure spread	0.26 stops
Area used for calculation	0.535 x 0.533
Camera settings	Exposure time: 1/1000 ISO: 400 F-number: 1.7 Focal length: 37 mm (35 mm equivalent) Exposure compensation: 1
Black at screen edge
Screen photo	[open image]
Luminance	0.28 cd/m2
Luminance spread	0.13 cd/m2 (2 standard deviations)
Exposure value	–2.46 stops (aim for –2 to –3)
Exposure spread	0.67 stops
Area used for calculation	0.535 x 0.533
Camera settings	Exposure time: 0.4 ISO: 400 F-number: 1.7 Focal length: 37 mm (35 mm equivalent) Exposure compensation: 0

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.