Contrast ratio results

Black
Contrast ratio	19424:1
Monitor model
Submitted	27 Dec 2017 21:00 CET, by 188.168..
Camera model	Nikon D5000
Processing remarks	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: 56.3 s (Set EV to +8.1) Warning: image file 2: automatic white balance can cause inaccuracies. Warning: Image ISO settings are not the same. Warning: Image focal lengths/zoom levels are not the same.
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–10.64 stops (aim for –2 to –3)
Exposure spread	0.82 stops
Area used for calculation	0.929 x 1
Camera settings	Exposure time: 1/5 ISO: 800 F-number: 5.3 Focal length: 67 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	183 cd/m2
Luminance spread	95 cd/m2 (2 standard deviations)
Exposure value	–3.04 stops (aim for –2 to –3)
Exposure spread	0.76 stops
Area used for calculation	0.874 x 0.987
Camera settings	Exposure time: 1/125 ISO: 200 F-number: 5.3 Focal length: 63 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.