SUPERB IMAGE QUALITY - The RF 16MM F28 S features nine lens elements in seven groups with a single PMo aspheric lens for excellent colour rendition and crisp contrasty images.SMOOTH AND QUIET S MOTOR - The S lens motor offers refined quiet focusing and great smoothness It is fast for photo and provides that stunning cinematic look for video too.REACH NEW LEVELS - Increase your telephoto power with Canon RF extenders which connect seamlessly with metering and Auto Focus to give you even greater precise reach for those faraway subjects