Contrast ratio results for Dell 2209wa

Black
Contrast ratio	4225:1
Monitor model	Dell 2209wa
Submitted	31 Mar 2009 03:54 CEST, by 190.50..
Camera model	Panasonic DMC-LZ7
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 49.4 s (Set EV to +6.6) Note: image file 2: suggested exposure time: 1/86 s (Set EV to -0.8)
Screen photo	[open image]
Luminance	0.02 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–8.13 stops (aim for –2 to –3)
Exposure spread	0.65 stops
Area used for calculation	0.534 x 0.534
Camera settings	Exposure time: 1 ISO: 100 F-number: 2.8 Focal length: 37 mm (35 mm equivalent) Exposure compensation: 1
White
Screen photo	[open image]
Luminance	101 cd/m2
Luminance spread	4 cd/m2 (2 standard deviations)
Exposure value	–0.73 stops (aim for –2 to –3)
Exposure spread	0.05 stops
Area used for calculation	0.534 x 0.534
Camera settings	Exposure time: 1/25 ISO: 100 F-number: 2.8 Focal length: 37 mm (35 mm equivalent) Exposure compensation: 1

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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.