Contrast ratio of iPhone 6S

Contrast ratio 1160:1
Monitor model iPhone 6S
Submitted 26 Mar 2016 21:36 CET, by 174.29.*.*
Camera model Sony ILCE-6000
Processing remarks

Note: image file 1: suggested exposure time: 5.0 s (Set EV to -1.6)

Black
Screen photo
Luminance 0.09 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –0.9 stops   (aim for –2 to –3)
Exposure spread 0.07 stops
Area used for calculation 0.333 x 0.376
Camera settings Exposure time: 15   ISO: 400   F-number: 3.5
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 108 cd/m2
Luminance spread 24 cd/m2 (2 standard deviations)
Exposure value –2.6 stops   (aim for –2 to –3)
Exposure spread 0.33 stops
Area used for calculation 0.333 x 0.376
Camera settings Exposure time: 1/250   ISO: 400   F-number: 3.5
Focal length: 24 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.