Contrast ratio results

Black
Contrast ratio	1:1
Monitor model
Submitted	26 Mar 2024 03:09 CET, by 85.172..
Camera model	samsung Galaxy A34 5G
Processing remarks
Screen photo	[open image]
Luminance	0.2 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–1.96 stops (aim for –2 to –3)
Exposure spread	0.06 stops
Area used for calculation	0.409 x 0.306
Camera settings	Exposure time: 1 ISO: 400 F-number: 1.9 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 2
White
Screen photo	[open image]
Luminance	0.2 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–1.96 stops (aim for –2 to –3)
Exposure spread	0.06 stops
Area used for calculation	0.409 x 0.306
Camera settings	Exposure time: 1 ISO: 400 F-number: 1.9 Focal length: 25 mm (35 mm equivalent) Exposure compensation: 2

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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.