Canon RF-S 18-45mm f/4.5-6.3 IS STM Review

The Canon RF-S 18-45mm f/4.5-6.3 IS STM is a compact kit zoom designed for Canon's APS-C RF-mount cameras like the EOS R7 and R10. Its retractable design makes it extremely lightweight and portable, earning praise as a solid "take everywhere" lens for creators who value mobility over speed. At $349, it represents reasonable value for those looking to keep their setup lean without sacrificing too much optical quality.

Optically, the lens delivers excellent central sharpness at 18mm across most apertures, though edge performance lags noticeably behind. The variable f/4.5-6.3 aperture is slow by modern standards, which limits low-light versatility and shallow depth-of-field effects. Still, for daylight shooting and general walkaround use, reviewers find it a capable match for its target cameras. If you prioritize size and weight and plan to shoot mostly in good light, this lens handles the basics well.