Contrast ratio results for Dell U 2412 M

Black
Contrast ratio	1071:1
Monitor model	Dell U 2412 M
Submitted	08 Dec 2011 22:37 CET, by 195.22..
Camera model	Panasonic DMC-FZ7
Processing remarks	image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 3.7 s (Set EV to +1.9) image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Screen photo	[open image]
Luminance	0.08 cd/m2
Luminance spread	0.04 cd/m2 (2 standard deviations)
Exposure value	–4.37 stops (aim for –2 to –3)
Exposure spread	0.77 stops
Area used for calculation	0.52 x 0.52
Camera settings	Exposure time: 1 ISO: 400 F-number: 2.8 Focal length: 36 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	87 cd/m2
Luminance spread	10 cd/m2 (2 standard deviations)
Exposure value	–2.95 stops (aim for –2 to –3)
Exposure spread	0.17 stops
Area used for calculation	0.52 x 0.52
Camera settings	Exposure time: 1/400 ISO: 400 F-number: 2.8 Focal length: 36 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.