Sony E-mount lenses are a type of interchangeable lens designed for Sony's mirrorless cameras. They feature a compact design, making them lightweight and easy to carry. These lenses come in various focal lengths and apertures, catering to different photography styles, from wide-angle landscapes to telephoto portraits. The E-mount system supports both full-frame and APS-C sensor cameras, providing versatility for photographers. Sony offers a range of lenses, including prime and zoom options, as well as third-party manufacturers that produce compatible lenses. This variety allows users to choose the best lens for their specific needs and creative vision.