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

Contrast ratio results for Samsung p2470hn

Contrast ratio 1362:1
Monitor model Samsung p2470hn
Submitted 24 Mar 2013 08:39 CET, by 190.136.*.*
Camera model SAMSUNG GT-N8010
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 1: automatic white balance can cause inaccuracies.
image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 3.2 s (Set EV to +4.7)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.

Black
Screen photo
[open image]
Luminance 0.09 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –7.17 stops   (aim for –2 to –3)
Exposure spread 1.75 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/8   ISO: 400   F-number: 2.7
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 118 cd/m2
Luminance spread 80 cd/m2 (2 standard deviations)
Exposure value –2.52 stops   (aim for –2 to –3)
Exposure spread 1.03 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/433   ISO: 400   F-number: 2.7
Focal length: 0 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.