The Canon RF 24-105mm f/4L IS USM is a versatile constant-aperture zoom lens that covers everyday focal lengths from 24mm wide-angle to 105mm telephoto. Engineered for Canon's EOS R system mirrorless cameras, this all-purpose zoom delivers consistent f/4 brightness across the entire range, optical image stabilization up to 5 stops, and a built-in customizable control ring for direct camera setting adjustments. Whether you're shooting travel, events, or environmental portraits, the RF 24-105mm f/4L serves as a flexible single-lens solution.

Canon RF 24-105mm f/4L IS USM Overview

The Canon RF 24-105mm f/4L IS USM reimagines the classic walkaround zoom for modern mirrorless photography. A constant f/4 aperture throughout the zoom range eliminates the light loss you'd experience with a variable-aperture design, maintaining consistent exposure and depth of field whether you're at 24mm or 105mm. The optical design uses 18 elements arranged in 14 groups, including aspherical and UD elements that work together to minimize distortion, chromatic aberration, and flare across the entire focal range.

This Canon lens represents a refinement of the zoom category. Photographers frequently ask which single lens to own for their mirrorless camera, and the RF 24-105mm f/4L answers that question. The constant f/4 aperture works in conditions that would require faster glass on older camera systems. The 5-stop image stabilization compensates for camera shake during handheld shooting, enabling sharp images at shutter speeds that would normally risk blur. Together, these features make the lens reliable for run-and-gun work in variable lighting.

Key Features of the Canon RF 24-105mm f/4L

The RF 24-105mm f/4L balances optical excellence with practical design choices. Its constant f/4 brightness simplifies exposure calculations and exposure metering across the zoom range. The NANO USM (ultrasonic motor) autofocus system delivers fast, nearly silent focus transitions that stay out of the way during both stills and video recording. Focus breathing is minimized, important for videographers who rely on stable focal lengths during dynamic shots.

Dust and water-resistant construction means the lens performs reliably in challenging weather. The sealing extends to the filter threads, so a protective 77mm filter serves double duty as both optical protection and environmental barrier. The control ring on the barrel allows direct adjustment of aperture, shutter speed, ISO, or exposure compensation without using camera controls, giving you quicker access to critical settings during fast-paced shooting.

• Constant f/4 maximum aperture throughout 24-105mm range
• 5-stop optical image stabilization (IS) for handheld stability
• NANO USM autofocus system with minimal focus breathing
• 18 elements in 14 groups (including aspherical and UD elements)
• Dust and water-resistant construction
• Customizable control ring for direct setting adjustment
• 77mm filter threads
• Minimum focus distance: 1.48 feet (45cm)
• Lens weight: 700g (1.54 lbs)
• Length: 4.22 inches (107.3mm)
• Maximum aperture remains f/4 from 24mm to 105mm
• 84 degrees to 23 degrees 20 minutes angle of view

Compatible Canon EOS R System Cameras

The RF 24-105mm f/4L works with all Canon EOS R series mirrorless camera bodies. This includes full-frame models like the EOS R5 II and R6, as well as crop-sensor APS-C bodies like the EOS R7, R50, and R100. On APS-C cameras, the lens gains an effective 1.6x crop factor, turning the 24-105mm into a 38-168mm equivalent. This extended reach makes the lens even more useful for telephoto applications on smaller sensors.

Canon has prioritized RF mount development, with ongoing firmware updates that enhance autofocus performance, image stabilization, and color science across compatible cameras. Using the RF 24-105mm f/4L with recent EOS R bodies gives you access to these latest improvements. The lens communicates focus data with the camera's in-body stabilization system, allowing the camera to coordinate mechanical and electronic stabilization for maximum shake reduction.

Who Uses the Canon RF 24-105mm f/4L

Travel photographers love this lens because it covers landscape, portrait, and detail shots without lens changes. A single constant-aperture zoom eliminates the need to carry multiple lenses or deal with gaps in focal length coverage. The compact size and reasonable weight make it practical for backpacking and walking-around photography where minimizing gear weight matters.

Event photographers rely on the RF 24-105mm f/4L to capture wide ambient views and tighter shots of moments and details. The 5-stop stabilization supports handheld shooting in dimly lit venues where tripods aren't practical. The silent NANO USM focus means you can adjust focus during video segments without disturbing audio recording.

Content creators shooting hybrid photo and video appreciate the lens for its video performance. The control ring allows precise aperture or shutter speed adjustments without reaching for camera menus. The constant f/4 aperture means consistent exposure as you zoom, and minimal focus breathing keeps subject positioning stable during focus pulls. Documentary and commercial videographers use it as a primary lens on digital mirrorless cameras.

Frequently Asked Questions

What is the difference between f/4 constant and f/4-5.6 variable aperture on zoom lenses?

A constant f/4 aperture maintains the same maximum brightness across the entire zoom range. As you zoom from 24mm to 105mm, the lens never stops down. A variable aperture design like f/4-5.6 starts at f/4 but closes down to f/5.6 as you zoom in. This means at 105mm, you lose a stop of light, requiring either slower shutter speeds or higher ISO. The RF 24-105mm f/4L maintains f/4 throughout, so exposure stays consistent and autofocus remains fast even at the telephoto end.

How does 5-stop image stabilization affect handheld shutter speeds?

The rule of thumb for handheld photography is that your shutter speed should be at least 1 divided by the focal length. At 105mm, that suggests 1/105th of a second to avoid blur. With 5-stop stabilization, you gain approximately 5 stops of help, which roughly translates to using shutter speeds 32 times slower. Instead of 1/105th, you might safely shoot at 1/3rd of a second. In practice, this depends on your hand stability and subject movement. Low light shooting becomes much more practical, especially when combined with the constant f/4 aperture.

Can I use the RF 24-105mm f/4L on Canon APS-C mirrorless cameras?

Yes. The RF 24-105mm f/4L works on all EOS R APS-C cameras, including the R7, R50, and R100. The 1.6x crop factor converts the focal length to an effective 38-168mm, extending the telephoto reach. You lose some wide-angle capability at the short end, but gain telephoto reach at the long end. Many APS-C photographers prefer this trade-off, especially when covering sports or wildlife where the extra reach helps.

What is the control ring and how do I use it?

The customizable control ring is a motorized dial on the lens barrel that you program to control a specific camera setting. You can set it to adjust aperture, shutter speed, ISO, exposure compensation, or white balance. This gives you direct, tactile control of critical settings without navigating menus or using camera buttons. It's especially useful during video work when you need quick adjustments between takes, or during fast-paced photography when you don't want to take your eye from the viewfinder.

Is the RF 24-105mm f/4L suitable for professional work?

The RF 24-105mm f/4L handles professional assignments well, particularly for versatile single-lens coverage like event work, corporate video, and editorial photography. The constant f/4 aperture, fast NANO USM autofocus, and weather sealing meet professional build standards. For specialized work like studio portraiture that demands faster apertures, or telephoto work requiring 200mm or longer reach, dedicated prime lenses or telephoto zooms serve those needs better. Many professionals own this lens alongside faster primes and longer zooms as their primary versatile lens.

Does the lens include a hood and what other accessories do I need?

The RF 24-105mm f/4L comes with the EW-83N petal-style lens hood, a protective carrying case, lens caps, and a 1-year limited warranty. Beyond the included items, consider a high-quality UV or protective filter for the 77mm threads. For travel and outdoor use, lens cases and pouches protect against dust and moisture. Some photographers add a polarizing filter or ND filter depending on their shooting style, and a quality cleaning kit maintains the lens surfaces.

Shop the Canon RF 24-105mm f/4L at Samy's Camera

The Canon RF 24-105mm f/4L IS USM delivers the versatility of a classic zoom in a modern optical design engineered specifically for mirrorless photography. Its constant f/4 aperture, 5-stop stabilization, and weather-sealed construction make it equally at home covering events, travel assignments, or documentary video work. Whether you're building your first EOS R kit or adding to an established system, this lens serves as a reliable core piece that works across a broad range of photographic situations. Visit Samy's Camera online or in-store to explore bundles, financing options, and compatible camera accessories for your setup.