Contrast ratio results

Black
Contrast ratio	591:1
Monitor model
Submitted	27 Mar 2014 22:07 CET, by 59.95..
Camera model	SAMSUNG ES65 ES67 / VLUU ES65 ES67 / S
Processing remarks	image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Screen photo	[open image]
Luminance	0.43 cd/m2
Luminance spread	0.1 cd/m2 (2 standard deviations)
Exposure value	–2.62 stops (aim for –2 to –3)
Exposure spread	0.33 stops
Area used for calculation	0.39 x 0.39
Camera settings	Exposure time: 1 ISO: 400 F-number: 3.5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	252 cd/m2
Luminance spread	20 cd/m2 (2 standard deviations)
Exposure value	–2.16 stops (aim for –2 to –3)
Exposure spread	0.11 stops
Area used for calculation	0.39 x 0.39
Camera settings	Exposure time: 1/431 ISO: 400 F-number: 3.5 Focal length: 27 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.