Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio of Olympue E30

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)

Black
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

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.