The Sony a7R III is a 42.4MP mirrorless digital camera designed for exceptional low light performance. Expandable ISO up to 102400. Capable of capturing stunning stills. Full UHD 4K video. The Sony Exmor R BSI CMOS sensor is paired with the BIONZ X Image Processor for lightning-fast image processing speeds. A 399 point autofocus system and versatile AF modes and adjustments, allow you to reliably and quickly focus in a wide range of shooting scenarios. Can be customized to your specific shooting situation. Smart features like a 5 axis image stabilization system. Built in wifi and Bluetooth. Dual SD slots. USB 3.1 sync ports combine for a premium shooting experience and performance.