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

Contrast ratio results

Contrast ratio 1707:1
Monitor model
Submitted 04 Dec 2023 17:30 CET, by 85.76.*.*
Camera model Sony SLT-A99V
Processing remarks

Note: image file 1: suggested exposure time: 2.4 s (Set EV to +1.2)

Black
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.2 cd/m2 (2 standard deviations)
Exposure value –3.74 stops   (aim for –2 to –3)
Exposure spread 3.25 stops
Area used for calculation 0.531 x 0.706
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 40 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 215 cd/m2
Luminance spread 74 cd/m2 (2 standard deviations)
Exposure value –1.64 stops   (aim for –2 to –3)
Exposure spread 0.5 stops
Area used for calculation 0.531 x 0.706
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 40 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.