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

Contrast ratio results

Contrast ratio 901:1
Monitor model
Submitted 11 Mar 2013 22:59 CET, by 91.209.*.*
Camera model Fujifilm FinePix F11
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 4.3 s (Set EV to +2.1)

Black
Screen photo
[open image]
Luminance 0.07 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –4.6 stops   (aim for –2 to –3)
Exposure spread 0.86 stops
Area used for calculation 0.52 x 0.52
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 36 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 62 cd/m2
Luminance spread 10 cd/m2 (2 standard deviations)
Exposure value –3.48 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.52 x 0.52
Camera settings Exposure time: 1/416   ISO: 400   F-number: 2.8
Focal length: 36 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.