Contrast ratio results

Black
Contrast ratio	663:1 (edge: 718:1)
Monitor model
Submitted	13 Aug 2021 12:03 CEST, by 80.186..
Camera model	Fujifilm FinePix HS20EXR
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 2: automatic white balance can cause inaccuracies.
Screen photo	[open image]
Luminance	0.21 cd/m2
Luminance spread	0.1 cd/m2 (2 standard deviations)
Exposure value	–1.73 stops (aim for –2 to –3)
Exposure spread	0.73 stops
Area used for calculation	0.668 x 0.891
Camera settings	Exposure time: 4 ISO: 400 F-number: 3.6 Focal length: 50.4 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	138 cd/m2
Luminance spread	29 cd/m2 (2 standard deviations)
Exposure value	–2.36 stops (aim for –2 to –3)
Exposure spread	0.31 stops
Area used for calculation	0.668 x 0.891
Camera settings	Exposure time: 1/256 ISO: 400 F-number: 3.6 Focal length: 50.4 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.19 cd/m2
Luminance spread	0.09 cd/m2 (2 standard deviations)
Exposure value	–1.85 stops (aim for –2 to –3)
Exposure spread	0.65 stops
Area used for calculation	0.668 x 0.891
Camera settings	Exposure time: 4 ISO: 400 F-number: 3.6 Focal length: 50.4 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.