The RF system is very new, and native lenses are anything but plentiful. If you're looking for alternatives, you'll need to wait for Canon to release more options, or consider using EF SLR lenses via an adapter.
Crisp optics; 1:2 macro reproduction; Optical stabilization; Bright aperture; Attractive price
Some barrel distortion; Vignette at wide apertures; No weather sealing or fluorine coating; Doesn't include lens hood or pouch