Contrast ratio results

Black
Contrast ratio	1.978e+06:1
Monitor model
Submitted	08 Nov 2024 22:55 CET, by 95.237..
Camera model	realme narzo 50 5G
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: 134.9 s (Set EV to +11.1) Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/370 s (Set EV to -1.9) 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	–13.58 stops (aim for –2 to –3)
Exposure spread	2.02 stops
Area used for calculation	0.361 x 0.361
Camera settings	Exposure time: 1/16 ISO: 3200 F-number: 1.8 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	224 cd/m2
Luminance spread	20 cd/m2 (2 standard deviations)
Exposure value	–0.63 stops (aim for –2 to –3)
Exposure spread	0.13 stops
Area used for calculation	0.361 x 0.361
Camera settings	Exposure time: 1/100 ISO: 80 F-number: 1.8 Focal length: 25 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.