Contrast ratio results

Black
Contrast ratio	18243:1
Monitor model
Submitted	16 May 2025 20:36 CEST, by 183.228..
Camera model	vivo Y3 4G64G
Processing remarks	Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). 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: 81.0 s (Set EV to +6.3) Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 2: automatic white balance can cause inaccuracies.
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–8.84 stops (aim for –2 to –3)
Exposure spread	3.93 stops
Area used for calculation	0.528 x 0.844
Camera settings	Exposure time: 1 ISO: 400 F-number: 2.2 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	41 cd/m2
Luminance spread	14 cd/m2 (2 standard deviations)
Exposure value	–3.33 stops (aim for –2 to –3)
Exposure spread	0.48 stops
Area used for calculation	0.528 x 0.844
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 2.2 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0

{adcode}

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.