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

Contrast ratio of Sony SDM-S75A

Contrast ratio 282:1
Monitor model Sony SDM-S75A
Submitted 22 Mar 2011 22:36 CET, by 94.232.*.*
Camera model Nikon D40
Processing remarks


Black
Screen photo
[open image]
Luminance 0.32 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –2.37 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 0.721 x 0.814
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: -2
White
Screen photo
[open image]
Luminance 92 cd/m2
Luminance spread 30 cd/m2 (2 standard deviations)
Exposure value –2.55 stops   (aim for –2 to –3)
Exposure spread 0.48 stops
Area used for calculation 0.721 x 0.814
Camera settings Exposure time: 1/320   ISO: 400   F-number: 2.8
Focal length: 52 mm   (35 mm equivalent)
Exposure compensation: -2
{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.