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

Contrast ratio results

Contrast ratio 205:1 (edge: 146:1)
Monitor model
Submitted 24 Jan 2015 11:14 CET, by 194.116.*.*
Camera model Nikon COOLPIX S8100
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
image file 3: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.8 cd/m2
Luminance spread 1.8 cd/m2 (2 standard deviations)
Exposure value –3.04 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.433 x 0.433
Camera settings Exposure time: 0.4   ISO: 400   F-number: 3.5
Focal length: 30 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 163 cd/m2
Luminance spread 29 cd/m2 (2 standard deviations)
Exposure value –2.51 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.433 x 0.433
Camera settings Exposure time: 1/356   ISO: 400   F-number: 3.5
Focal length: 30 mm   (35 mm equivalent)
Exposure compensation: -1.3
Black at screen edge
Screen photo
[open image]
Luminance 1.12 cd/m2
Luminance spread 2.64 cd/m2 (2 standard deviations)
Exposure value –2.97 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.433 x 0.433
Camera settings Exposure time: 0.3   ISO: 400   F-number: 3.5
Focal length: 30 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.