Helping to pave the way for our Rf-s lens line, the Rf-S18-150mm F3.5-6.3 Is Stm is an all-around lens that is ideal for creative photography and movies, the Rf-S18-150mm F3.5-6.3 Is Stm combines legendary Canon Optics with a versatile zoom range and quiet operation for flexibility on the go. This lens was designed with smaller Aps-c sensors in mind, and when attached to a full frame Eos R camera, automatically enables the 1.6x crop mode.It offers 100% x 100% Dual Pixel Cmos Af coverage for Aps-c sensors, and 80% x 80% Dual Pixel Cmos Af coverage for Full Frame sensors (in crop mode). Delivering remarkable performance for everyday use, the lead screw-type stepping motor (Stm) helps ensure smooth autofocus and quiet operation, letting you capture videos with great audio and minimal background noise so you won't distract your subject in a quiet photo environment.Optical Image Stabilization provides up to 4.5 stops of correction, and up to 6.5 stops with Coordinated Is.