Canon EF lenses are a series of interchangeable camera lenses designed for use with Canon digital single-lens reflex (DSLR) cameras. Introduced in 1987, these lenses feature an electronic communication system that allows for faster autofocus and improved exposure control. They come in various focal lengths and apertures, catering to different photography styles, from wide-angle landscapes to telephoto wildlife shots. The EF designation stands for "Electro-Focus," indicating the lenses' electronic focus capabilities. These lenses are compatible with all Canon EOS cameras, including full-frame and crop-sensor models. Additionally, Canon offers a range of specialized lenses, such as macro and tilt-shift options, to enhance creative possibilities.