Contrast ratio results for lg

Black
Contrast ratio	11:1
Monitor model	lg
Submitted	03 Jul 2012 05:12 CEST, by 70.77..
Camera model	Nikon D300S
Processing remarks	image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. 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. image file 3: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: Image F-number settings are not the same. Warning: Image focal lengths/zoom levels are not the same. Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?
Screen photo	[open image]
Luminance	304 cd/m2
Luminance spread	1126 cd/m2 (2 standard deviations)
Exposure value	–3.05 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.502 x 0.558
Camera settings	Exposure time: 1/30 ISO: 200 F-number: 14 Focal length: 36 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	3384 cd/m2
Luminance spread	7677 cd/m2 (2 standard deviations)
Exposure value	–3.42 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.376 x 0.418
Camera settings	Exposure time: 1/500 ISO: 200 F-number: 13 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	3360 cd/m2
Luminance spread	7593 cd/m2 (2 standard deviations)
Exposure value	–3.43 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.377 x 0.418
Camera settings	Exposure time: 1/500 ISO: 200 F-number: 13 Focal length: 27 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.