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Contrast ratio results for Olympue E30

Contrast ratio 451:1 (edge: 472:1)
Monitor model Olympue E30
Submitted 29 Mar 2011 20:06 CEST, by 86.144.*.*
Camera model Olympus E-30
Processing remarks

Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/130 s (Set EV to +0.6)
Note: image file 3: suggested exposure time: 3.6 s (Set EV to +1.8)

Black
Screen photo
[open image]
Luminance 0.14 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –1.68 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 6   ISO: 400   F-number: 3.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 3
White
Screen photo
[open image]
Luminance 61 cd/m2
Luminance spread 2 cd/m2 (2 standard deviations)
Exposure value –0.1 stops   (aim for –2 to –3)
Exposure spread 0.04 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/25   ISO: 400   F-number: 3.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 3
Black at screen edge
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –1.33 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 8   ISO: 400   F-number: 3.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 3

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.