Contrast ratio results

Black
Contrast ratio	257140:1
Monitor model
Submitted	03 Jun 2025 04:12 CEST, by 78.137..
Camera model	motorola moto g30
Processing remarks	Warning: image file 1: camera was zoomed out too much. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 556.0 s (Set EV to +10.4) Warning: image file 2: camera was zoomed out too much. Warning: image file 2: automatic white balance can cause inaccuracies. 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	–14.94 stops (aim for –2 to –3)
Exposure spread	0.16 stops
Area used for calculation	0.1 x 0.1
Camera settings	Exposure time: 1/10 ISO: 398 F-number: 1.7 Focal length: 5 mm (35 mm equivalent) Exposure compensation: -2
White
Screen photo	[open image]
Luminance	51 cd/m2
Luminance spread	1 cd/m2 (2 standard deviations)
Exposure value	–2.61 stops (aim for –2 to –3)
Exposure spread	0.04 stops
Area used for calculation	0.1 x 0.1
Camera settings	Exposure time: 1/500 ISO: 400 F-number: 1.7 Focal length: 5 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.