Contrast ratio of DELL

Contrast ratio 868:1
Monitor model DELL
Submitted 30 Aug 2015 23:48 CEST, by 77.230.*.*
Camera model Nikon D750
Processing remarks


Black
Screen photo
Luminance 0.21 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –3.03 stops   (aim for –2 to –3)
Exposure spread 0.69 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 2.5   ISO: 400   F-number: 4.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 184 cd/m2
Luminance spread 18 cd/m2 (2 standard deviations)
Exposure value –1.91 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 1/160   ISO: 400   F-number: 4.5
Focal length: 28 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.