The sony Alpha A7R Mark II features the world's first back-illuminated
full-frame 42.4-megapixel Exmor R sensor, which delivers high resolution,
high sensitivity (expandable up to ISO 102,400) and high speed AF response up
to 40% incredibly faster than the original A7R thanks to 399 focal plane phase detection
AF points. The camera also includes a 5-axis image stabilisation system
borrowed from the acclaimed A7 II model and can shoot and record 4K video in
multiple formats including Super 35mm (without pixel binning) and full-frame
format, a world’s first for digital cameras.