Contrast ratio results

Black
Contrast ratio	2367:1
Monitor model
Submitted	29 Jul 2024 07:22 CEST, by 47.222..
Camera model	samsung SM-A136U
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: 0.7 s (Set EV to +2.8) Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/110 s (Set EV to -1.4) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0.02 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–5.31 stops (aim for –2 to –3)
Exposure spread	2.01 stops
Area used for calculation	0.358 x 0.477
Camera settings	Exposure time: 1/10 ISO: 5000 F-number: 1.9 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	37 cd/m2
Luminance spread	3 cd/m2 (2 standard deviations)
Exposure value	–1.07 stops (aim for –2 to –3)
Exposure spread	0.13 stops
Area used for calculation	0.358 x 0.477
Camera settings	Exposure time: 1/40 ISO: 160 F-number: 1.9 Focal length: 27 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.