Contrast ratio results for Samsung/770P

Black
Contrast ratio	1692:1
Monitor model	Samsung/770P
Submitted	27 Jun 2010 22:40 CEST, by 187.15..
Camera model	Sony DSC-P73
Processing remarks	Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Note: image file 1: suggested exposure time: 8.5 s (Set EV to +1.5) Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Screen photo	[open image]
Luminance	0.03 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–4 stops (aim for –2 to –3)
Exposure spread	0.73 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 3 ISO: 400 F-number: 2.8 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	59 cd/m2
Luminance spread	7 cd/m2 (2 standard deviations)
Exposure value	–2.83 stops (aim for –2 to –3)
Exposure spread	0.16 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 1/250 ISO: 400 F-number: 2.8 Focal length: 0 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.