Contrast ratio of ACER V193HQL (0% bright. -> comfortable)

Black
Contrast ratio	1145:1
Monitor model	ACER V193HQL (0% bright. -> comfortable)
Submitted	28 Jan 2011 18:33 CET, by 212.37..
Camera model	Nikon COOLPIX P50
Processing remarks	image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time. Note: image file 1: suggested exposure time: 10.4 s (Set EV to +1.4) image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Screen photo	[open image]
Luminance	0.06 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–3.88 stops (aim for –2 to –3)
Exposure spread	0.38 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 4 ISO: 200 F-number: 2.8 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	65 cd/m2
Luminance spread	12 cd/m2 (2 standard deviations)
Exposure value	–1.63 stops (aim for –2 to –3)
Exposure spread	0.26 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1/60 ISO: 200 F-number: 2.8 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.