The Sony Alpha 7, also known as the A7, is a full-frame mirrorless camera that was first released in 2013. It features a 24.3-megapixel sensor, which allows for high-quality images with excellent detail and dynamic range. The camera is compact and lightweight, making it a popular choice for both amateur and professional photographers. The A7 supports interchangeable lenses, giving users the flexibility to choose from a wide range of Sony E-mount lenses. It also offers advanced features such as fast autofocus, continuous shooting, and full HD video recording, making it suitable for various photography styles, including landscapes, portraits, and events.