Contrast ratio results

Black
Contrast ratio	8:1
Monitor model
Submitted	22 Nov 2022 05:26 CET, by 35.140..
Camera model	samsung SM-G998U1
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Note: image file 1: suggested exposure time: 2.2 s (Set EV to +1.3) Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 0.3 s (Set EV to -1.8)
Screen photo	[open image]
Luminance	0.06 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–3.78 stops (aim for –2 to –3)
Exposure spread	0.23 stops
Area used for calculation	0.347 x 0.347
Camera settings	Exposure time: 0.9 ISO: 400 F-number: 1.8 Focal length: 24 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	0.42 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–0.71 stops (aim for –2 to –3)
Exposure spread	0.1 stops
Area used for calculation	0.347 x 0.347
Camera settings	Exposure time: 1 ISO: 400 F-number: 1.8 Focal length: 24 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.