Contrast ratio results for samaung

Black
Contrast ratio	99:1 (edge: 13:1)
Monitor model	samaung
Submitted	26 Feb 2016 07:22 CET, by 178.135..
Camera model	Canon EOS 5D Mark III
Processing remarks	image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: using the flash makes no sense. 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: Underexposed. Please increase the shutter time. Note: image file 2: suggested exposure time: 1/49 s (Set EV to +1.7) Warning: using the flash makes no sense. Warning: image file 3: camera was zoomed in too much. image file 3: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: Image ISO settings are not the same. Warning: Image F-number settings are not the same. Warning: Images were taken with different cameras. Warning: Image focal lengths/zoom levels are not the same.
Screen photo	[open image]
Luminance	6 cd/m2
Luminance spread	25 cd/m2 (2 standard deviations)
Exposure value	–4.25 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.678 x 0.762
Camera settings	Exposure time: 1/166 ISO: 2000 F-number: 4 Focal length: 48.8 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	592 cd/m2
Luminance spread	1504 cd/m2 (2 standard deviations)
Exposure value	–3.13 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	0.694 x 0.781
Camera settings	Exposure time: 1/160 ISO: 320 F-number: 11 Focal length: 50 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	47 cd/m2
Luminance spread	130 cd/m2 (2 standard deviations)
Exposure value	–2.3 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/166 ISO: 2000 F-number: 5.7 Focal length: 102 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.