Contrast ratio of Dell 2407WFP-HC

Black
Contrast ratio	647:1 (edge: 699:1)
Monitor model	Dell 2407WFP-HC
Submitted	13 Jan 2009 23:50 CET, by 94.192..
Camera model	Nikon D70
Processing remarks
Screen photo	[open image]
Luminance	0.28 cd/m2
Luminance spread	0.19 cd/m2 (2 standard deviations)
Exposure value	–3.22 stops (aim for –2 to –3)
Exposure spread	0.99 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 1 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	181 cd/m2
Luminance spread	14 cd/m2 (2 standard deviations)
Exposure value	–1.53 stops (aim for –2 to –3)
Exposure spread	0.11 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 1/200 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.26 cd/m2
Luminance spread	0.1 cd/m2 (2 standard deviations)
Exposure value	–3.34 stops (aim for –2 to –3)
Exposure spread	0.54 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 1 ISO: 400 F-number: 3.5 Focal length: 27 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.