Sony A7R-II

Photo by sony.com
Finally, probably the best mirrorless camera to date is the Sony A7R-II. It is a 42.4 megapixel full frame mirrorless camera with a 5-axis image stabilisation. It supports full sensor 4K video recording with 399 on-sensor phase detection points. Although the price speaks for itself, the image quality produced by this camera is certainly unbelievably sharp. Best for professionals, at $2360 (body only), Sony A7R-II is definitely a strong competitor for all mirrorless cameras and even a DSLR.
42MP Full Frame BSI CMOS sensor
399 on-sensor Phase Detection points
5-axis image stabilization
Internal 4K recording from full sensor width or 'Super' 35 crop
Picture Profile system including ITU-709 and S-Log2 gamma
Full magnesium alloy construction
2.36m dot OLED viewfinder with 0.7x magnification
High speed AF with non-native lenses