The Nikon D5100 is a digital single-lens reflex (DSLR) camera that was released in 2011. It features a 16.2-megapixel sensor, allowing for high-resolution images and detailed photography. The camera is equipped with a 3-inch vari-angle LCD screen, making it easier to capture shots from different angles. The D5100 offers various shooting modes, including manual and automatic settings, catering to both beginners and experienced photographers. It also supports full HD video recording, enabling users to create high-quality videos. With its lightweight design and user-friendly interface, the D5100 is a popular choice for photography enthusiasts.