The Canon RF 24-240mm and the RF 24-105mm lenses share the same wide end, but they are built for different jobs. Choose the 24-240 when one lens has to cover everything from a crowded room to a distant landmark, and choose a 24-105 when you want a more consistent, usually brighter everyday zoom. Always confirm exact specs on Canon’s product pages before you buy.
What Each Lens Is For
The RF 24-240mm f/4-6.3 IS USM is an all-in-one travel zoom. Its long reach lets a single lens frame a street scene, a portrait and a faraway subject without a lens change. The trade-off is that the aperture narrows as you zoom in, so it works best in good light or with image stabilization helping at slower shutter speeds.
The RF 24-105mm name covers two well-known lenses: an f/4 L version aimed at demanding work, and a lighter variable-aperture version. Both stop at 105mm, which suits portraits, events, family photos and general walkaround use. Because the range is shorter, the design can aim for steadier sharpness and a wider aperture at the long end.
Key Differences at a Glance
| Trait | RF 24-240mm | RF 24-105mm |
|---|---|---|
| Long end | 240mm | 105mm |
| Zoom type | Super-zoom | Standard zoom |
| Aperture at long end | Narrow, variable | Wider (constant f/4 on the L version) |
| Lens changes | Rarely needed | More likely for distant subjects |
| Best conditions | Daylight, bright interiors | A wider range of lighting |
How to Decide
- Choose the 24-240 if you travel light, dislike swapping lenses, or shoot a mix of wide scenes and distant details such as animals at a zoo or architecture across a plaza.
- Choose a 24-105 if most of your photos are people, events or landscapes where 105mm is enough and you want a wider aperture for dim rooms.
- Choose the f/4 L version of the 24-105 if you want a constant aperture while zooming, which keeps exposure settings steady and helps with video.
- Think about background blur. Neither lens is a shallow-depth specialist, but the 24-105 gives you a little more control at its long end.
A Quick Check Before You Decide
- Open your last few hundred photos in your editing software and sort them by focal length.
- Count how many frames sit beyond 105mm. If it is a small share, the extra reach may go unused.
- Note how many were taken in dim light. A lot of indoor shooting favors the brighter aperture of the 24-105.
- Consider weight and bulk in your bag. Treat these steps as a guide, not a rule.
FAQ
Is the 24-240 a good choice for low light?
It is less comfortable there, because the aperture narrows as you zoom. Stabilization helps with still subjects at slower shutter speeds, but it does not freeze moving people, so you may need a higher ISO.
Can the 24-240 replace two lenses?
For many trips and casual outings, yes, since it covers wide to long reach in one package. If you often shoot in dim venues or want the widest apertures, a pair of faster lenses may serve you better.
The Short Version
The RF 24-240mm is about convenience and reach, while the RF 24-105mm lenses are about a steadier, usually brighter everyday zoom. Choose by how you shoot most often: far-ranging trips favor the 24-240, and people, events and lower light favor the 24-105.
