Canon's flagship RF-mount standard zoom and the workhorse lens for EOS R system shooters.
The Canon RF 24-105mm f/4L IS USM was one of four lenses launched alongside the original EOS R in 2018. As the RF-mount equivalent of the legendary EF 24-105mm f/4L, it serves as the default standard zoom for Canon's full-frame mirrorless system and quickly became one of the most popular RF lenses.
Optically it is a clear improvement over the EF version with sharpness across the frame, better corner performance, and reduced chromatic aberration. IS provides up to 5 stops of stabilisation increasing to 8 stops when paired with IBIS bodies like the R5 or R6. The Nano USM motor is extremely fast and near-silent.
Canon RF mount only, 77mm filter thread. An f/4-7.1 IS STM non-L version exists as a cheaper alternative. The EF 24-105mm f/4L can be adapted to RF-mount bodies via Canon's EF-RF adapter.
Check IS operation, zoom ring smoothness, and AF motor. Inspect the weather seal at the mount. This lens holds value well due to strong demand. It is the lens most photographers buy first when entering the Canon RF system.