Contrast ratio results for unknown

Black
Contrast ratio	96:1
Monitor model	unknown
Submitted	20 Nov 2018 15:50 CET, by 201.212..
Camera model	Sony DSC-H1
Processing remarks	Warning: using the flash makes no sense. Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. Warning: image file 1: automatic white balance can cause inaccuracies. image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: using the flash makes no sense. Warning: image file 2: automatic white balance can cause inaccuracies. image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: image file 2: Overexposed. Please decrease the shutter time. Warning: Image F-number settings are not the same.
Screen photo	[open image]
Luminance	152 cd/m2
Luminance spread	325 cd/m2 (2 standard deviations)
Exposure value	–2.05 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.558 x 0.558
Camera settings	Exposure time: 1/60 ISO: 64 F-number: 2.8 Focal length: 38.6 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	14513 cd/m2
Luminance spread	16022 cd/m2 (2 standard deviations)
Exposure value	–1.2 stops (aim for –2 to –3)
Exposure spread	1.79 stops
Area used for calculation	0.558 x 0.558
Camera settings	Exposure time: 1/1000 ISO: 64 F-number: 5 Focal length: 38.6 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.