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

Contrast ratio results for Sony Bravia 40W600B

Contrast ratio 527247:1 (edge: 2.80977e+06:1)
Monitor model Sony Bravia 40W600B
Submitted 08 Sep 2015 00:38 CEST, by 184.56.*.*
Camera model LG Electronics VS980 4G
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 725.9 s (Set EV to +12.1)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 3: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 3: Underexposed. Please increase the shutter time.
Note: image file 3: suggested exposure time: 3868.4 s (Set EV to +14.5)

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –14.59 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.528 x 0.704
Camera settings Exposure time: 1/6   ISO: 400   F-number: 2.4
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 158 cd/m2
Luminance spread 29 cd/m2 (2 standard deviations)
Exposure value –1.67 stops   (aim for –2 to –3)
Exposure spread 0.27 stops
Area used for calculation 0.528 x 0.704
Camera settings Exposure time: 1/408   ISO: 400   F-number: 2.4
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –17 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.528 x 0.704
Camera settings Exposure time: 1/6   ISO: 400   F-number: 2.4
Focal length: 0 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.