Contrast ratio of Olympue E30

Black
Contrast ratio	455:1 (edge: 414:1)
Monitor model	Olympue E30
Submitted	29 Mar 2011 20:51 CEST, by 86.144..
Camera model	Olympus E-30
Processing remarks	Note: image file 2: suggested exposure time: 1/130 s (Set EV to +0.3)
Screen photo	[open image]
Luminance	0.13 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–2.65 stops (aim for –2 to –3)
Exposure spread	0.35 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 3.2 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	59 cd/m2
Luminance spread	6 cd/m2 (2 standard deviations)
Exposure value	–3.82 stops (aim for –2 to –3)
Exposure spread	0.15 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1/320 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -1
Black at screen edge
Screen photo	[open image]
Luminance	0.14 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–3.19 stops (aim for –2 to –3)
Exposure spread	0.34 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 2 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: 0

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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.