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

Contrast ratio of LG L1980U

Contrast ratio 220:1
Monitor model LG L1980U
Submitted 25 Oct 2008 06:35 CEST, by 71.181.*.*
Camera model Kodak DX7630 ZOOM DIGITAL CAMERA
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.
Note: image file 2: suggested exposure time: 1/140 s (Set EV to +1.4)

Black
Screen photo
[open image]
Luminance 0.31 cd/m2
Luminance spread 0.18 cd/m2 (2 standard deviations)
Exposure value –3.16 stops   (aim for –2 to –3)
Exposure spread 0.88 stops
Area used for calculation 0.563 x 0.563
Camera settings Exposure time: 1   ISO: 360   F-number: 3.4
Focal length: 39 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 67 cd/m2
Luminance spread 24 cd/m2 (2 standard deviations)
Exposure value –3.88 stops   (aim for –2 to –3)
Exposure spread 0.52 stops
Area used for calculation 0.563 x 0.563
Camera settings Exposure time: 1/362   ISO: 360   F-number: 3.4
Focal length: 39 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.