Yes, the Sony a7R II records UHD 4K video internally to SDXC cards using the XAVC S format at up to 100 Mbps.
The a7R II features a magnesium alloy body with dust and moisture resistance, making it suitable for professional use in challenging environments.
The camera is rated for approximately 290 shots when using the viewfinder or 340 shots when using the LCD monitor. It is recommended to rent extra NP-FW50 batteries for full-day shoots.
Yes, using an adapter like the Sigma MC-11 or Metabones, you can use Canon EF lenses with full autofocus support thanks to the 399 phase-detection points.