Contrast ratio of Hannspree HF257

Contrast ratio 467:1
Monitor model Hannspree HF257
Submitted 07 Nov 2015 10:06 CET, by 151.62.*.*
Camera model Canon EOS 1100D
Processing remarks


Black
Screen photo
Luminance 0.2 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –2.31 stops   (aim for –2 to –3)
Exposure spread 0.53 stops
Area used for calculation 0.437 x 0.492
Camera settings Exposure time: 2.6   ISO: 400   F-number: 3.5
Focal length: 31.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 95 cd/m2
Luminance spread 34 cd/m2 (2 standard deviations)
Exposure value –3.45 stops   (aim for –2 to –3)
Exposure spread 0.52 stops
Area used for calculation 0.437 x 0.492
Camera settings Exposure time: 1/395   ISO: 400   F-number: 3.5
Focal length: 31.5 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.