Contrast ratio results for lg 27MU88-W

Black
Contrast ratio	37803:1
Monitor model	lg 27MU88-W
Submitted	26 Dec 2019 19:57 CET, by 73.252..
Camera model	Apple iPhone XR
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 208.6 s (Set EV to +15.7) Note: image file 2: suggested exposure time: 1/180 s (Set EV to +1.1)
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–18.17 stops (aim for –2 to –3)
Exposure spread	2.95 stops
Area used for calculation	0.376 x 0.376
Camera settings	Exposure time: 1/250 ISO: 400 F-number: 1.8 Focal length: 26 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	22 cd/m2
Luminance spread	2 cd/m2 (2 standard deviations)
Exposure value	–3.64 stops (aim for –2 to –3)
Exposure spread	0.16 stops
Area used for calculation	0.376 x 0.376
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 1.8 Focal length: 26 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.