Contrast ratio results

Black
Contrast ratio	165:1 (edge: 207:1)
Monitor model
Submitted	03 Mar 2014 16:21 CET, by 223.18..
Camera model	Sony DSC-RX100M2
Processing remarks	Note: image file 1: suggested exposure time: 0.5 s (Set EV to -1.1) Note: image file 2: suggested exposure time: 1/350 s (Set EV to -1.1)
Screen photo	[open image]
Luminance	0.26 cd/m2
Luminance spread	0.02 cd/m2 (2 standard deviations)
Exposure value	–1.39 stops (aim for –2 to –3)
Exposure spread	0.13 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1 ISO: 400 F-number: 1.8 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	43 cd/m2
Luminance spread	5 cd/m2 (2 standard deviations)
Exposure value	–1.35 stops (aim for –2 to –3)
Exposure spread	0.16 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1/160 ISO: 400 F-number: 1.8 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.21 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–1.72 stops (aim for –2 to –3)
Exposure spread	0.21 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1 ISO: 400 F-number: 1.8 Focal length: 28 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.