Contrast ratio results for DELL U2311H

Black
Contrast ratio	2604:1
Monitor model	DELL U2311H
Submitted	10 Jan 2011 06:51 CET, by 76.16..
Camera model	Olympus E-520
Processing remarks	Warning: using the flash makes no sense. Warning: image file 1: camera was zoomed in too much. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 1.6 s (Set EV to +2.0) Warning: using the flash makes no sense. Warning: image file 2: camera was zoomed in too much. Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Screen photo	[open image]
Luminance	0.09 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–4.5 stops (aim for –2 to –3)
Exposure spread	0.39 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 0.4 ISO: 400 F-number: 2 Focal length: 100 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	246 cd/m2
Luminance spread	73 cd/m2 (2 standard deviations)
Exposure value	–1.47 stops (aim for –2 to –3)
Exposure spread	0.43 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/800 ISO: 400 F-number: 2 Focal length: 100 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.