Contrast ratio results

Black
Contrast ratio	13601:1
Monitor model
Submitted	15 May 2015 01:10 CEST, by 77.130..
Camera model	LG Electronics LG-D331
Processing remarks	Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). 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: 89.7 s (Set EV to +10.1) Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). 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. Note: image file 2: suggested exposure time: 1/55 s (Set EV to -1.5) Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–12.57 stops (aim for –2 to –3)
Exposure spread	1.41 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 1/12 ISO: 1100 F-number: 2.4 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	12 cd/m2
Luminance spread	7 cd/m2 (2 standard deviations)
Exposure value	–1.04 stops (aim for –2 to –3)
Exposure spread	0.82 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 1/20 ISO: 400 F-number: 2.4 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0

{adcode}

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.