Canon RF-S 10-18mm F4.5-6.3 IS STM Lens

On an APS-C sensor, the RF-S 10-18mm lens provides a field of view equivalent to approximately 16-29mm on a full-frame camera.

Yes, you can mount it on a full-frame EOS R camera. However, the camera will automatically engage a crop mode to match the lens's image circle, effectively using it as an APS-C lens.

The lens features built-in optical image stabilization providing up to 4 stops of correction. When paired with compatible cameras that support Coordinated IS, this can extend to 6 stops.

While it has image stabilization, the variable and relatively slow aperture (f/4.5-6.3) can make it challenging in very low light. For such conditions, a lens with a wider constant aperture or higher ISO settings may be preferred.

STM stands for Stepping Motor. This type of autofocus motor provides smooth, quiet, and precise focusing, which is particularly beneficial for video recording.

Gently blow off dust with a lens blower or use a soft lens brush. For fingerprints or smudges, use a clean microfiber lens cloth, wiping in a circular motion from the center outwards.

Ensure the lens is securely attached to the camera body. Check if autofocus is enabled on the camera and lens settings. Clean the lens contacts if they appear dirty.

Verify that image stabilization (IS) is turned on. Ensure your shutter speed is fast enough for the conditions, or use a tripod. Check if full-time manual focus is accidentally engaged and disable it if necessary.

The STM motor is designed to be quiet, but some minimal noise may be audible in extremely quiet environments. Ensure no external microphones are picking up excessive camera body noise.

Remove and reattach the lens, ensuring it clicks into place. Clean the electrical contacts on both the lens and the camera mount. If the issue persists, consult your camera's manual or Canon support.