Contrast ratio results

Black
Contrast ratio	503:1
Monitor model
Submitted	17 Jan 2010 05:59 CET, by 69.245..
Camera model	Nikon D700
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/300 s (Set EV to -1.3)
Screen photo	[open image]
Luminance	0.18 cd/m2
Luminance spread	0.04 cd/m2 (2 standard deviations)
Exposure value	–3.24 stops (aim for –2 to –3)
Exposure spread	0.31 stops
Area used for calculation	0.972 x 1
Camera settings	Exposure time: 1 ISO: 400 F-number: 2.8 Focal length: 70 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	89 cd/m2
Luminance spread	20 cd/m2 (2 standard deviations)
Exposure value	–1.23 stops (aim for –2 to –3)
Exposure spread	0.32 stops
Area used for calculation	0.972 x 1
Camera settings	Exposure time: 1/125 ISO: 400 F-number: 2.8 Focal length: 70 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.