Contrast ratio of ASUS vw195dl

Black
Contrast ratio	767:1 (edge: 1103:1)
Monitor model	ASUS vw195dl
Submitted	17 Apr 2011 23:55 CEST, by 94.70..
Camera model	Nikon D5000
Processing remarks	image file 3: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Screen photo	[open image]
Luminance	0.21 cd/m2
Luminance spread	0.06 cd/m2 (2 standard deviations)
Exposure value	–2.36 stops (aim for –2 to –3)
Exposure spread	0.4 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 2.5 ISO: 800 F-number: 5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	159 cd/m2
Luminance spread	14 cd/m2 (2 standard deviations)
Exposure value	–1.75 stops (aim for –2 to –3)
Exposure spread	0.12 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 1/200 ISO: 800 F-number: 5 Focal length: 27 mm (35 mm equivalent) Exposure compensation: 0
Black at screen edge
Screen photo	[open image]
Luminance	0.14 cd/m2
Luminance spread	0.08 cd/m2 (2 standard deviations)
Exposure value	–1.89 stops (aim for –2 to –3)
Exposure spread	0.81 stops
Area used for calculation	0.375 x 0.423
Camera settings	Exposure time: 5 ISO: 800 F-number: 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.