Contrast ratio results

Black
Contrast ratio	83:1
Monitor model
Submitted	03 Jul 2014 21:49 CEST, by 91.153..
Camera model	Canon EOS 60D
Processing remarks	Warning: image file 1: camera was zoomed in too much. image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: image file 1: Overexposed. Please decrease the shutter time. Warning: image file 2: camera was zoomed in too much. image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Warning: Image focal lengths/zoom levels are not the same.
Screen photo	[open image]
Luminance	12 cd/m2
Luminance spread	17 cd/m2 (2 standard deviations)
Exposure value	–2.44 stops (aim for –2 to –3)
Exposure spread	2.59 stops
Area used for calculation	1 x 0.499
Camera settings	Exposure time: 1.6 ISO: 100 F-number: 11 Focal length: 185 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	987 cd/m2
Luminance spread	3141 cd/m2 (2 standard deviations)
Exposure value	–2.65 stops (aim for –2 to –3)
Exposure spread	4.25 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/60 ISO: 100 F-number: 11 Focal length: 347 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.