Contrast ratio results

Black
Contrast ratio	912:1
Monitor model
Submitted	21 Feb 2015 09:48 CET, by 76.90..
Camera model	Sony DSC-H10
Processing remarks	Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent). Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Screen photo	[open image]
Luminance	0.08 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–2.19 stops (aim for –2 to –3)
Exposure spread	0.23 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 7 ISO: 400 F-number: 3.5 Focal length: 0 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	75 cd/m2
Luminance spread	11 cd/m2 (2 standard deviations)
Exposure value	–2.49 stops (aim for –2 to –3)
Exposure spread	0.2 stops
Area used for calculation	0.528 x 0.528
Camera settings	Exposure time: 1/160 ISO: 400 F-number: 3.5 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.