Contrast ratio results for LG D0443

Black
Contrast ratio	883:1 (edge: 810:1)
Monitor model	LG D0443
Submitted	20 Feb 2015 08:09 CET, by 2.247..
Camera model	Sony NEX-5N
Processing remarks	Warning: Image F-number settings are not the same. Warning: Image focal lengths/zoom levels are not the same.
Screen photo	[open image]
Luminance	0.21 cd/m2
Luminance spread	0.08 cd/m2 (2 standard deviations)
Exposure value	–2.36 stops (aim for –2 to –3)
Exposure spread	0.55 stops
Area used for calculation	0.716 x 0.955
Camera settings	Exposure time: 4 ISO: 400 F-number: 4.5 Focal length: 54 mm (35 mm equivalent) Exposure compensation: 3
White
Screen photo	[open image]
Luminance	186 cd/m2
Luminance spread	195 cd/m2 (2 standard deviations)
Exposure value	–2.88 stops (aim for –2 to –3)
Exposure spread	1.68 stops
Area used for calculation	0.53 x 0.707
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 4 Focal length: 40 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.23 cd/m2
Luminance spread	0.09 cd/m2 (2 standard deviations)
Exposure value	–1.65 stops (aim for –2 to –3)
Exposure spread	0.59 stops
Area used for calculation	0.716 x 0.955
Camera settings	Exposure time: 6 ISO: 400 F-number: 4.5 Focal length: 54 mm (35 mm equivalent) Exposure compensation: 3

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.