Contrast ratio results

Black
Contrast ratio	4589:1
Monitor model
Submitted	13 Aug 2009 22:48 CEST, by 125.163..
Camera model	Nikon D60
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 12.2 s (Set EV to +9.9) Warning: image file 2: automatic white balance can cause inaccuracies. Note: image file 2: suggested exposure time: 1/380 s (Set EV to -2.2)
Screen photo	[open image]
Luminance	0.04 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–13.43 stops (aim for –2 to –3)
Exposure spread	0.84 stops
Area used for calculation	0.584 x 0.654
Camera settings	Exposure time: 1/160 ISO: 800 F-number: 5 Focal length: 42 mm (35 mm equivalent) Exposure compensation: -1
White
Screen photo	[open image]
Luminance	178 cd/m2
Luminance spread	26 cd/m2 (2 standard deviations)
Exposure value	–1.27 stops (aim for –2 to –3)
Exposure spread	0.21 stops
Area used for calculation	0.584 x 0.654
Camera settings	Exposure time: 1/160 ISO: 800 F-number: 5 Focal length: 42 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.