Contrast ratio results for Acer_P244W

Contrast ratio 576:1
Monitor model Acer_P244W
Submitted 21 Mar 2016 20:11 CET, by 62.178.*.*
Camera model Panasonic DMC-FZ50
Processing remarks

Warning: Image focal lengths/zoom levels are not the same.

Black
Screen photo
Luminance 0.12 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –1.85 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.523 x 0.556
Camera settings Exposure time: 4   ISO: 400   F-number: 2.8
Focal length: 37 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 67 cd/m2
Luminance spread 14 cd/m2 (2 standard deviations)
Exposure value –1.65 stops   (aim for –2 to –3)
Exposure spread 0.31 stops
Area used for calculation 0.487 x 0.546
Camera settings Exposure time: 1/125   ISO: 400   F-number: 2.8
Focal length: 35 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.