Contrast ratio results for acer h243h

Black
Contrast ratio	3456:1
Monitor model	acer h243h
Submitted	02 Dec 2009 22:05 CET, by 78.90..
Camera model	Nikon D80
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 20.2 s (Set EV to +13.0) Note: image file 2: suggested exposure time: 1/170 s (Set EV to +1.2)
Screen photo	[open image]
Luminance	0.02 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–15.48 stops (aim for –2 to –3)
Exposure spread	0.62 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
White
Screen photo	[open image]
Luminance	79 cd/m2
Luminance spread	20 cd/m2 (2 standard deviations)
Exposure value	–3.72 stops (aim for –2 to –3)
Exposure spread	0.36 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.