Contrast ratio of HP LP2465

Black
Contrast ratio	999:1
Monitor model	HP LP2465
Submitted	10 May 2010 10:17 CEST, by 79.77..
Camera model	Olympus E-3
Processing remarks	Note: image file 1: suggested exposure time: 2.0 s (Set EV to -0.3) Note: image file 2: suggested exposure time: 1/490 s (Set EV to -0.6)
Screen photo	[open image]
Luminance	0.23 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–1.19 stops (aim for –2 to –3)
Exposure spread	0.18 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 5 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 1
White
Screen photo	[open image]
Luminance	229 cd/m2
Luminance spread	26 cd/m2 (2 standard deviations)
Exposure value	–0.87 stops (aim for –2 to –3)
Exposure spread	0.17 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1/160 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 1

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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.