Canon RF Mount. The Canon RF 15-30mm f/4.5-6.3 IS STM belongs to Canon’s line of RF-mount lenses. It’s compatible with Canon RF cameras. It does not work with Canon EF-mount cameras.

Ultra-Wide to Wide-Angle Zoom. This lens’s versatile ultra-wide to wide-angle zoom range makes it ideal for landscape, street, and architectural photography. Its variable f/4.5-6.3 aperture isn’t going to give you much flexibility in very low light, so it’s probably not the best for night shoots.

Advanced Optical Design. This lens’s eleven-group/thirteen-element optical formula includes two Ultra-Low Dispersion elements and one aspherical element that combine to minimize chromatic aberrations and color fringing while providing high clarity, color fidelity, and sharpness. Canon has applied a Super Spectra coating to the lens elements to further combat ghosting and flaring, even in harsh lighting.

Built-In Autofocus. This lens uses a ring-type Stepping Motor to provide fast, accurate, and nearly silent autofocus performance for both still and video shooters. You also get full-time manual-focus override for precision adjustments. This lens lets you work with a 1:2 maximum magnification ratio and a 5.1-inch minimum focusing distance so you can get close to your subjects.

Optical Image Stabilization. The 5-30mm f/4.5-6.3’s built-in image stabilizer compensates for 5.5 stops of camera shake on its own or 7 stops if you’re using Coordinated IS with a compatible camera, so that you can shoot in lower light and at slower shutter speeds without worry.

Configurable Control Ring. This RF mount lens features a new integrated, configurable control ring that you can use to adjust a range of exposure settings, including ISO, aperture, and exposure compensation.