Contrast ratio results for SAMSUNG 220T

Black
Contrast ratio	980:1
Monitor model	SAMSUNG 220T
Submitted	10 Feb 2012 23:44 CET, by 66.49..
Camera model	Canon EOS 60D
Processing remarks	Warning: image file 1: camera was zoomed out too much. image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 2: camera was zoomed out too much. Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation. Warning: image file 3: camera was zoomed out 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 file 3 is too bright to be a dark photo. Maybe you mixed up the files?
Screen photo	[open image]
Luminance	0.33 cd/m2
Luminance spread	0.05 cd/m2 (2 standard deviations)
Exposure value	–3.06 stops (aim for –2 to –3)
Exposure spread	0.21 stops
Area used for calculation	0.1 x 0.113
Camera settings	Exposure time: 1/4 ISO: 400 F-number: 1.8 Focal length: 3.9 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	325 cd/m2
Luminance spread	14 cd/m2 (2 standard deviations)
Exposure value	–1.75 stops (aim for –2 to –3)
Exposure spread	0.06 stops
Area used for calculation	0.1 x 0.113
Camera settings	Exposure time: 1/1579 ISO: 400 F-number: 1.8 Focal length: 3.9 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	121 cd/m2
Luminance spread	191 cd/m2 (2 standard deviations)
Exposure value	–1.18 stops (aim for –2 to –3)
Exposure spread	3.08 stops
Area used for calculation	0.1 x 0.113
Camera settings	Exposure time: 1/395 ISO: 400 F-number: 1.8 Focal length: 3.9 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.