Because of the large range of speeds (1 -13,000 m / yr),
a log color scale is used (Ian Joughlin, Big Ice)
Among all existing Tablets of any size, the iPad mini 4 takes first place and breaks performance records in many of the most important test categories including: lowest screen Reflectance (2.0 percent), highest contrast rating in high ambient light (225), a near perfect
log - straight intensity
scale and gamma of 2.22, and the highest absolute
color accuracy (average / maximum
color errors of 1.9 and 4.2 JNCD — tied for first place with the Microsoft Surface Pro 4).