Contrast ratio of LG 24EA53

Black
Contrast ratio	1049:1 (edge: 832:1)
Monitor model	LG 24EA53
Submitted	30 Mar 2014 12:50 CEST, by 95.116..
Camera model	Canon EOS 600D
Processing remarks	Note: image file 3: suggested exposure time: 1.2 s (Set EV to +1.0)
Screen photo	[open image]
Luminance	0.15 cd/m2
Luminance spread	0.06 cd/m2 (2 standard deviations)
Exposure value	–3.13 stops (aim for –2 to –3)
Exposure spread	0.62 stops
Area used for calculation	0.393 x 0.442
Camera settings	Exposure time: 1 ISO: 800 F-number: 3.5 Focal length: 28.3 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	157 cd/m2
Luminance spread	62 cd/m2 (2 standard deviations)
Exposure value	–1.72 stops (aim for –2 to –3)
Exposure spread	0.57 stops
Area used for calculation	0.393 x 0.442
Camera settings	Exposure time: 1/395 ISO: 800 F-number: 3.5 Focal length: 28.3 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.19 cd/m2
Luminance spread	0.15 cd/m2 (2 standard deviations)
Exposure value	–3.53 stops (aim for –2 to –3)
Exposure spread	1.2 stops
Area used for calculation	0.393 x 0.442
Camera settings	Exposure time: 0.6 ISO: 800 F-number: 3.5 Focal length: 28.3 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.