Contrast ratio results

Black
Contrast ratio	1.14667e+06:1
Monitor model
Submitted	07 Nov 2014 04:56 CET, by 177.204..
Camera model	Sony NEX-F3
Processing remarks	image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 87.5 s (Set EV to +3.1) Warning: Image ISO settings are not the same. Warning: Image F-number settings are not the same.
Screen photo	[open image]
Luminance	0 cd/m2
Luminance spread	0 cd/m2 (2 standard deviations)
Exposure value	–5.63 stops (aim for –2 to –3)
Exposure spread	0.5 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 10 ISO: 16000 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	152 cd/m2
Luminance spread	14 cd/m2 (2 standard deviations)
Exposure value	–2.51 stops (aim for –2 to –3)
Exposure spread	0.13 stops
Area used for calculation	0.374 x 0.424
Camera settings	Exposure time: 1/160 ISO: 800 F-number: 7.1 Focal length: 27 mm (35 mm equivalent) Exposure compensation: -0.7

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.