The Canon EF 24-105mm f/4L IS II USM is a flagship L-series standard zoom lens built for Canon EF full-frame DSLRs, delivering a versatile wide-angle to short-telephoto range with a constant f/4 maximum aperture for consistent exposure across every focal length. Redesigned with four aspherical elements — including a large-diameter double-sided glass-molded element — plus Air Sphere and Fluorine coatings, this second-generation L-series zoom achieves exceptional edge-to-edge sharpness, suppressed flare, and outstanding color fidelity in even the harshest lighting conditions.
Equipped with a ring-type Ultrasonic Motor (USM) for fast, near-silent autofocus and a four-stop Optical Image Stabilizer for confident handheld shooting in low light, the 24-105mm f/4L IS II USM is equally at home shooting landscapes, portraits, events, and travel. Its weather-sealed, dust- and moisture-resistant construction — a hallmark of Canon’s professional L-series — ensures reliable performance in challenging outdoor environments, making it the definitive one-lens solution for serious Canon shooters.
Key features
- Versatile 24-105mm Constant f/4 Zoom: Covers wide-angle through short-telephoto in a single lens with consistent f/4 illumination throughout the entire zoom range — ideal for travel, events, and everyday professional use.
- Redesigned Optics with 4 Aspherical Elements: Minimizes distortion and spherical aberrations across the full zoom range for sharp, accurate rendering from corner to corner, even wide open.
- Air Sphere & Fluorine Coatings: Air Sphere Coating dramatically reduces backlit flare and ghosting for superior contrast and color accuracy; Fluorine coating on front and rear elements repels fingerprints, dust, and smudging.
- 4-Stop Optical Image Stabilizer: Compensates for up to four shutter speed stops of camera shake, enabling sharp handheld shots in low light and at the longer telephoto end of the range.
- Ring-Type USM Autofocus with Full-Time Manual Override: The Ultrasonic Motor delivers fast, precise, and virtually silent AF — plus an internal focusing design so the front element never rotates, ideal when using polarizing or graduated filters.
- Weather-Sealed L-Series Build with 10-Blade Rounded Diaphragm: Dust- and moisture-resistant construction stands up to professional field use, while the 10-blade rounded diaphragm produces beautifully smooth, circular bokeh for compelling shallow depth-of-field imagery.
Specifications
| Lens Mount | Canon EF |
|---|---|
| Format Compatibility | Full-Frame & APS-C (38.4-168mm equivalent on APS-C) |
| Focal Length | 24-105mm |
| Maximum Aperture | f/4 (Constant) |
| Aperture Range | f/4 to f/22 |
| Image Stabilization | Optical IS, up to 4 shutter speed stops |
| Autofocus System | Ring-Type Ultrasonic Motor (USM) with Full-Time Manual Override |
| Optical Construction | 4 Aspherical Elements, Air Sphere Coating, Fluorine Coating |
| Diaphragm Blades | 10 (Rounded) |
| Weather Sealing | Dust & Moisture Resistant (L-Series) |
Frequently asked questions
Is the Canon EF 24-105mm f/4L IS II USM compatible with APS-C Canon cameras?
Yes. While designed for full-frame Canon EF-mount DSLRs, the lens is fully compatible with APS-C Canon bodies, where the crop factor provides an equivalent focal length range of approximately 38.4-168mm.
How effective is the Image Stabilization on this lens?
The Canon EF 24-105mm f/4L IS II USM features a built-in Optical Image Stabilizer rated at up to four shutter speed stops of compensation, allowing for sharper handheld shots in low-light conditions and at slower shutter speeds than would otherwise be possible.
Is the Canon EF 24-105mm f/4L IS II USM weather-sealed?
Yes. As a member of Canon's professional L-series, this lens features a weather-resistant construction that protects against dust and moisture. Additionally, Fluorine coatings are applied to the front and rear elements for extra protection against fingerprints and environmental smudging.
