Contrast ratio results for SONY 32W4000 (dynamic)

Black
Contrast ratio	9128:1
Monitor model	SONY 32W4000 (dynamic)
Submitted	13 Feb 2009 18:22 CET, by 91.150..
Camera model	Minolta DiMAGE A1
Processing remarks	Warning: image file 1: camera was zoomed in too much. image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen. Note: image file 1: suggested exposure time: 61.4 s (Set EV to +1.7) Note: image file 2: suggested exposure time: 1/150 s (Set EV to -0.6) Warning: Image focal lengths/zoom levels are not the same.
Screen photo	[open image]
Luminance	0.03 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–3.53 stops (aim for –2 to –3)
Exposure spread	0.76 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 30 ISO: 100 F-number: 3.2 Focal length: 74 mm (35 mm equivalent) Exposure compensation: 0.7
White
Screen photo	[open image]
Luminance	230 cd/m2
Luminance spread	22 cd/m2 (2 standard deviations)
Exposure value	–1.19 stops (aim for –2 to –3)
Exposure spread	0.14 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/60 ISO: 100 F-number: 3.2 Focal length: 72 mm (35 mm equivalent) Exposure compensation: 0.7

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.