Canon EF 20-35mm f/3.5-4.5 USM Lens
The Canon 20-35mm f/3.5-4.5 USM is a 20–35mm f/3.5 lens designed for Canon EF mount cameras. Used copies start from $317.9 on GearFocus, with buyer protection on every purchase.
Canon EF 20-35mm f/3.5-4.5 USM Lens
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Lens Overview — Canon 20-35mm f/3.5-4.5 USM
Key Features — Canon 20-35mm f/3.5-4.5 USM
20-35mm Wide-Angle Zoom: Covers a versatile wide-angle range suited to landscape, architecture, and environmental photography on full-frame bodies.
Canon EF Mount: Compatible with the full range of Canon EF-mount DSLR cameras, including full-frame bodies where the lens delivers its intended field of view.
Full-Frame Coverage: Designed for full-frame sensors, so there is no crop factor compromise on compatible Canon bodies.
USM Autofocus: Ultrasonic motor delivers fast, quiet autofocus with the ability to override to manual focus at any time.
f/3.5-4.5 Variable Aperture: Opens to f/3.5 at 20mm, stepping to f/4.5 at 35mm — a variable aperture arrangement to account for in lower-light situations.
77mm Filter Thread: Matches a common filter diameter across many Canon lenses, making it easy to share filters within an existing system.
Lens Specifications — Canon 20-35mm f/3.5-4.5 USM
| Spec | Detail |
|---|---|
| Use Cases | Landscape, Architecture, Travel |
| Lens Type | Zoom |
| Format | Full Frame |
| Zoom/Prime | Zoom |
| Focal Length | 20–35mm |
| Maximum Aperture | f/3.5 |
| Camera System | DSLR |
| Lens Mount | Canon EF |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 77mm |
Description — Canon 20-35mm f/3.5-4.5 USM
The Canon EF 20-35mm f/3.5-4.5 is a full-frame wide-angle zoom lens mounted on the Canon EF system, covering a focal length range from 20mm to 35mm. That range puts it firmly in wide-angle territory, ideal for scenes where capturing more of the environment is the goal. The maximum aperture is f/3.5 at the wide end, adjusting to f/4.5 at 35mm — a variable aperture that is important to factor in when shooting in dimmer conditions.
Autofocus is supported alongside manual focus, providing shooting flexibility across different scenarios. The 77mm filter thread makes it compatible with a broad ecosystem of filters, a practical advantage for photographers who already own filters in that size. At just 340g, it's a lightweight lens for its class, reducing fatigue during longer shooting sessions.
It is worth noting that image stabilization is not included, so stable shooting technique or a tripod becomes more important, particularly at slower shutter speeds.
Pros — Canon 20-35mm f/3.5-4.5 USM
- ✓Wide focal length range of 20–35mm covers broad wide-angle perspectives on full-frame bodies
- ✓Lightweight at just 340g, making it easy to carry for extended shoots
- ✓Supports both autofocus and manual focus for flexible operation
Cons — Canon 20-35mm f/3.5-4.5 USM
- ✗Variable maximum aperture of f/3.5–4.5 limits light gathering, especially at the 35mm end
- ✗No image stabilization (confirmed in specs), which can be a drawback in lower-light or slower shutter speed situations
- ✗Maximum aperture of f/3.5 is relatively modest for a wide-angle zoom, limiting background separation and low-light performance
Videos — Canon 20-35mm f/3.5-4.5 USM
AN AFFORDABLE WIDE ANGLE LENS | Canon 20-35mm 3.5-4.5 USM — Eduardo Torres