Contrast ratio results for Samsung Syncmaster 2243

Black
Contrast ratio	994:1
Monitor model	Samsung Syncmaster 2243
Submitted	05 May 2010 06:55 CEST, by 24.76..
Camera model	Nikon D40X
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 6.7 s (Set EV to +2.1) Note: image file 2: suggested exposure time: 1/150 s (Set EV to +1.4)
Screen photo	[open image]
Luminance	0.07 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–4.56 stops (aim for –2 to –3)
Exposure spread	0.31 stops
Area used for calculation	0.375 x 0.421
Camera settings	Exposure time: 1.6 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	69 cd/m2
Luminance spread	24 cd/m2 (2 standard deviations)
Exposure value	–3.92 stops (aim for –2 to –3)
Exposure spread	0.51 stops
Area used for calculation	0.375 x 0.421
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 3.5 Focal length: 27 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.