Contrast ratio results for Dynex DX-24L230A12

Contrast ratio 243:1
Monitor model Dynex DX-24L230A12
Submitted 09 Apr 2018 04:47 CEST, by 207.228.*.*
Camera model Canon PowerShot SX400 IS
Processing remarks

Warning: Image F-number settings are not the same.

Black
Screen photo
Luminance 0.57 cd/m2
Luminance spread 0.47 cd/m2 (2 standard deviations)
Exposure value –3.43 stops   (aim for –2 to –3)
Exposure spread 1.26 stops
Area used for calculation 0.349 x 0.395
Camera settings Exposure time: 0.4   ISO: 400   F-number: 3.4
Focal length: 25.2 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 140 cd/m2
Luminance spread 53 cd/m2 (2 standard deviations)
Exposure value –1.61 stops   (aim for –2 to –3)
Exposure spread 0.55 stops
Area used for calculation 0.349 x 0.395
Camera settings Exposure time: 1/125   ISO: 400   F-number: 4
Focal length: 25.2 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.