Contrast ratio results

Black
Contrast ratio	10446:1
Monitor model
Submitted	21 Jan 2009 21:25 CET, by 96.242..
Camera model	Nikon D200
Processing remarks	Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 31.2 s (Set EV to +10.6) Warning: image file 2: automatic white balance can cause inaccuracies. image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: Image F-number settings are not the same.
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–14.11 stops (aim for –2 to –3)
Exposure spread	2.32 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/100 ISO: 100 F-number: 1.4 Focal length: 75 mm (35 mm equivalent) Exposure compensation: -1
White
Screen photo	[open image]
Luminance	99 cd/m2
Luminance spread	27 cd/m2 (2 standard deviations)
Exposure value	–2.44 stops (aim for –2 to –3)
Exposure spread	0.39 stops
Area used for calculation	1 x 1
Camera settings	Exposure time: 1/80 ISO: 100 F-number: 2.8 Focal length: 75 mm (35 mm equivalent) Exposure compensation: -1

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.