Contrast ratio results

Black
Contrast ratio	421:1
Monitor model
Submitted	18 Feb 2020 04:54 CET, by 24.40..
Camera model	Sony DSC-HX9V
Processing remarks	Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Screen photo	[open image]
Luminance	0.23 cd/m2
Luminance spread	0.21 cd/m2 (2 standard deviations)
Exposure value	–2.03 stops (aim for –2 to –3)
Exposure spread	1.44 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 2.5 ISO: 400 F-number: 3.3 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	96 cd/m2
Luminance spread	16 cd/m2 (2 standard deviations)
Exposure value	–3.28 stops (aim for –2 to –3)
Exposure spread	0.25 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 3.3 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0

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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.