Contrast ratio results

Black
Contrast ratio	1.57214e+07:1
Monitor model
Submitted	29 Sep 2019 15:20 CEST, by 159.146..
Camera model	Google Pixel XL
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Note: image file 1: suggested exposure time: 1/310 s (Set EV to -1.6) Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 2: Underexposed. Please increase the shutter time. Note: image file 2: suggested exposure time: 7778.2 s (Set EV to +7.9) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–10.38 stops (aim for –2 to –3)
Exposure spread	4.16 stops
Area used for calculation	0.528 x 0.704
Camera settings	Exposure time: 33.1 ISO: 1030 F-number: 2 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	119 cd/m2
Luminance spread	5 cd/m2 (2 standard deviations)
Exposure value	–0.89 stops (aim for –2 to –3)
Exposure spread	0.06 stops
Area used for calculation	0.345 x 0.46
Camera settings	Exposure time: 1/100 ISO: 156 F-number: 2 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.