Contrast ratio results for ASUS MG278Q

Black
Contrast ratio	12072:1
Monitor model	ASUS MG278Q
Submitted	25 Nov 2025 20:47 CET, by 80.213..
Camera model	Apple iPhone 16 Pro
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 3.6 s (Set EV to +5.6) Warning: image file 2: automatic white balance can cause inaccuracies. Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0.02 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–9.15 stops (aim for –2 to –3)
Exposure spread	0.97 stops
Area used for calculation	0.693 x 0.693
Camera settings	Exposure time: 1/28 ISO: 640 F-number: 1.8 Focal length: 48 mm (35 mm equivalent) Exposure compensation: -1
White
Screen photo	[open image]
Luminance	258 cd/m2
Luminance spread	101 cd/m2 (2 standard deviations)
Exposure value	–0.67 stops (aim for –2 to –3)
Exposure spread	0.57 stops
Area used for calculation	0.693 x 0.693
Camera settings	Exposure time: 1/237 ISO: 160 F-number: 1.8 Focal length: 48 mm (35 mm equivalent) Exposure compensation: 1.33

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.