Contrast ratio results for Olympue E30

Black
Contrast ratio	627:1 (edge: 966:1)
Monitor model	Olympue E30
Submitted	29 Mar 2011 20:57 CEST, by 86.144..
Camera model	Olympus E-30
Processing remarks	Warning: image file 3: Underexposed. Please increase the shutter time. Note: image file 3: suggested exposure time: 5.2 s (Set EV to +1.0)
Screen photo	[open image]
Luminance	0.14 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–2.94 stops (aim for –2 to –3)
Exposure spread	0.36 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 2.5 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -0.3
White
Screen photo	[open image]
Luminance	86 cd/m2
Luminance spread	16 cd/m2 (2 standard deviations)
Exposure value	–2.93 stops (aim for –2 to –3)
Exposure spread	0.26 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1/250 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -0.7
Black at screen edge
Screen photo	[open image]
Luminance	0.09 cd/m2
Luminance spread	0.03 cd/m2 (2 standard deviations)
Exposure value	–4.2 stops (aim for –2 to –3)
Exposure spread	0.46 stops
Area used for calculation	0.404 x 0.404
Camera settings	Exposure time: 1.6 ISO: 400 F-number: 3.5 Focal length: 28 mm (35 mm equivalent) Exposure compensation: -0.7

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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.