Canon RF 24-105mm F4 L IS USM: Right Zoom for You?
By T K FOTO TECHNIC PTE LTD | Published: 2026-11-05
Category: Buying Guides
A practical buying guide to the Canon RF 24-105mm F4 L IS USM, with clear decision rules for travel, video, and everyday full-frame shooting.
Quick answer
Buy the Canon RF 24-105mm F4 L IS USM if you want one full-frame zoom that covers wide-angle to short telephoto with a constant f/4 aperture, smooth Nano USM focusing, and image stabilization. Skip it if you mainly shoot in very low light or need a lighter, lower-cost standard zoom.
What the constant f/4 aperture changes in real use
A constant f/4 maximum aperture means the lens does not get darker as you zoom from 24mm to 105mm. That matters when you are framing a portrait at 105mm or pulling back for a group shot at 24mm without changing exposure settings between shots. It also keeps the lens smaller and lighter than an f/2.8 standard zoom, which is the main trade-off: you gain portability and range but lose one stop of light gathering.
Where the RF 24-105mm f/4L fits against other Canon zooms
This is an L-series lens, so it sits above consumer standard zooms in build and optical intent, but it is not a substitute for a dedicated wide-angle or telephoto zoom. Compared with an RF 24-70mm f/2.8, you give up aperture speed for extra reach to 105mm and a more compact body. Compared with an RF 24-240mm superzoom, you get a constant aperture and L-series construction but much less telephoto reach. The right choice depends on whether your priority is light, reach, or aperture.
Travel and video: why stabilization and Nano USM matter
For travel, the 24-105mm range covers landscapes, street scenes, food, and portraits without swapping lenses. The built-in image stabilization helps when you shoot handheld in dim interiors or at dusk, and the Nano USM motor is designed for responsive, smooth focusing that suits video recording. If you often shoot handheld video while walking, the combination of stabilization and smooth AF is a practical advantage over older screw-drive or noisier lenses.
Decision rules for choosing the RF 24-105mm f/4L
- If you want one lens for travel and everyday shooting: Choose this lens when you need wide-angle to short telephoto coverage in a single compact zoom. It replaces a 24-70mm and a 70-200mm for casual travel, and the stabilization helps in museums, restaurants, and evening streets. Check that 105mm is enough reach for your typical subjects; if you often shoot wildlife or sports, plan a second telephoto zoom.
- If you shoot handheld video: Prioritize this lens when smooth autofocus and stabilization matter more than a wide maximum aperture. The Nano USM motor is designed for quiet, responsive focusing during recording. For very dark venues, test whether f/4 gives you enough light before committing.
- If low-light aperture is your top priority: Skip this lens and look at an f/2.8 standard zoom instead. The f/4 aperture is a deliberate trade-off for size, weight, and reach; it will not match an f/2.8 lens for freezing motion indoors without flash. Decide whether one stop of light is worth giving up the extra 35mm of reach and the smaller body.
- If you already own a 24-70mm f/2.8: Do not buy this lens for the same focal range unless you specifically need the extra 70-105mm reach and lighter weight for travel. Keep the f/2.8 for low-light work and add this lens only if the overlap is acceptable. Compare total kit weight and how often you shoot between 70mm and 105mm.
Product facts
- Canon RF 24-105mm F4 L IS USM: Constant f/4 maximum aperture across the 24-105mm zoom range. You can zoom without the exposure shifting, which simplifies handheld shooting and video.
Canon RF 24-105mm F4 L IS USM - Canon RF 24-105mm F4 L IS USM: First full-frame L lens powered by Nano USM. Focusing is responsive and smooth, which helps when recording video or tracking moving subjects.
- Canon RF 24-105mm F4 L IS USM: Image stabilization is built in. Handheld shots in low light are more achievable without raising ISO as much.
Who should buy it
Best for
- Full-frame Canon RF shooters who want one versatile zoom for travel, events, and everyday use
- Handheld video creators who value smooth Nano USM focusing and built-in stabilization
- Photographers who prefer a constant aperture and L-series build over a superzoom
Not for
- Shooters who regularly work in very low light and need f/2.8 or faster
- Users who need long telephoto reach beyond 105mm in a single lens
- Budget-focused buyers who do not need L-series construction or a constant aperture
