The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 24-105mm F4L IS and the Leica SL 24-90mm F2.8-4 ASPH for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Leica SL 24-90mm F2.8-4 ASPH is the longer of the two lenses at 138mm. The Canon RF 24-105mm F4L IS with a length of 107mm, is 31mm shorter. Besides being longer, the Leica SL 24-90mm F2.8-4 ASPH also has a larger diameter of 88mm compared to the Canon RF 24-105mm F4L IS's 84mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Canon RF 24-105mm F4L IS weighs 700g, which means it is 440g (38%) lighter than the Leica SL 24-90mm F2.8-4 ASPH which has a weight of 1140g.
Filter Threads
The Canon RF 24-105mm F4L IS has a filter size of 77mm whereas the Leica SL 24-90mm F2.8-4 ASPH has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Canon RF 24-105mm F4L IS:
And these are the 82mm filters that we recommend for the Leica SL 24-90mm F2.8-4 ASPH:
Lens Mounts
The Canon RF 24-105mm F4L IS has the Canon RF lens mount whereas the Leica SL 24-90mm F2.8-4 ASPH has the Leica L lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R6 V, Canon R6 III and Canon C50 for the Canon RF Mount and Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount.
Focal Range
Canon RF 24-105mm F4L IS has a focal range of 24-105mm and
4.4X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
38.4 - 168mm.
On the other hand, the Leica SL 24-90mm F2.8-4 ASPH has a focal range of 24-90mm and 3.8X zoom ratio .