While Canon initially focused on full frame cameras and lenses with the RF mount, the release of cameras like the EOS R7 and EOS R10 and associated RF-S lenses has shown that the company also intends to develop APS-C options in tandem with the full frame line. For those APS-C cameras, there are two relatively new lens options, the RF-S 18-150mm f/3.5-6.3 IS STM and RF-S 18-45mm f/4.5-6.3 IS STM. Which one is right for you? This excellent video comparison will help you pick.