The Nikon D5 is a high-end, professional-grade FX-format (full-frame) DSLR camera released in 2016, known for its robust build, exceptional low-light performance (ISO up to 102,400), and fast action capture with 153-point autofocus and 12fps burst shooting, making it a legendary tool for sports, wildlife, and demanding photojournalism, featuring 20.8MP resolution and 4K video capabilities.