The Sony A7R II is a full-frame mirrorless camera known for its high-resolution 42.4-megapixel sensor. It features advanced autofocus capabilities, including 399 phase-detection points, which enhance its ability to capture sharp images quickly. The camera also supports 4K video recording, making it suitable for both photography and videography. Additionally, the A7R II has in-body image stabilization, which helps reduce blurriness caused by camera shake. Its compact design and lightweight body make it a popular choice among professional photographers and enthusiasts who need a portable yet powerful camera for various shooting conditions.