The Canon EF 500mm f/4.0 L IS USM Lens is considered a Super Telephoto Lens.
A super long focal length is the biggest attraction to the Canon EF 500mm f/4.0L IS USM Lens and where the product category gets its title. Super image quality and sharpness are highly notable features. Super-fast focusing. Utilizing Ring USM (Ultrasonic Motor),the Canon EF 500mm f/4.0 L IS USM Lens focuses very fast, very accurately – and very quietly. FTM (Full Time manual) focusing is enabled. The Canon EF 500mm f/4.0 L IS USM Lens is equipped with a Focus Preset feature.