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

Contrast ratio of ASUS vw195dl

Contrast ratio 851:1 (edge: 1821:1)
Monitor model ASUS vw195dl
Submitted 17 Apr 2011 23:43 CEST, by 94.70.*.*
Camera model Nikon D5000
Processing remarks

Note: image file 1: suggested exposure time: 2.4 s (Set EV to +1.3)
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 0.2 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –3.77 stops   (aim for –2 to –3)
Exposure spread 0.53 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1   ISO: 800   F-number: 5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 167 cd/m2
Luminance spread 16 cd/m2 (2 standard deviations)
Exposure value –2 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/250   ISO: 800   F-number: 5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.09 cd/m2
Luminance spread 0.16 cd/m2 (2 standard deviations)
Exposure value –2.86 stops   (aim for –2 to –3)
Exposure spread 4.05 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 4   ISO: 800   F-number: 5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
{adcode}

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.