Canon EF 70-300mm f/4-5.6 L IS USM
The Canon EF 70-300mm f/4-5.6 L IS USM is a 70–300mm f/4 lens designed for Canon EF mount cameras. Used copies start from $741.91 on GearFocus, with buyer protection on every purchase.
Canon EF 70-300mm f/4-5.6 L IS USM
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Lens Overview — Canon EF 70-300mm f/4-5.6 L IS USM
Key Features — Canon EF 70-300mm f/4-5.6 L IS USM
70-300mm Telephoto Zoom: Covers a versatile telephoto range suited to wildlife, sports, and event photography where subject reach and compression are essential.
L-Series Optical Quality: Part of Canon's professional L-series lineup, featuring fluorite and UD lens elements to minimize chromatic aberration and deliver high contrast across the zoom range.
f/4-5.6 Maximum Aperture: Opens to f/4 at the wide end, providing a useful light advantage for handheld shooting in variable conditions.
4-Stop Image Stabilization: Built-in IS rated at up to 4 stops of compensation helps counteract camera shake at longer focal lengths, extending the practical range of handheld shooting.
Ring-Type USM Autofocus: Ultrasonic motor delivers fast, near-silent autofocus with full-time manual focus override without switching modes.
Weather-Sealed Construction: Dust and moisture resistant build consistent with Canon L-series standards, suitable for outdoor use in challenging conditions.
Lens Specifications — Canon EF 70-300mm f/4-5.6 L IS USM
| Spec | Detail |
|---|---|
| Use Cases | Wildlife, Sports, Portrait, Travel |
| Lens Type | Zoom |
| Format | Full Frame |
| Zoom/Prime | Zoom |
| Focal Length | 70–300mm |
| Maximum Aperture | f/4 |
| Camera System | DSLR |
| Lens Mount | Canon EF |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | Optical |
| Filter Thread | 67mm |
Description — Canon EF 70-300mm f/4-5.6 L IS USM
The Canon EF 70-300mm f/4-5.6 L IS USM is a telephoto zoom lens designed for Canon EF mount DSLRs with full-frame sensor coverage. The zoom range runs from 70mm to 300mm, providing meaningful reach across a wide variety of telephoto scenarios. At the wide end of the zoom, the lens opens to a maximum aperture of f/4, with the aperture varying to f/5.6 at the long end.
Built-in optical image stabilization is a significant asset for shooting at longer focal lengths without a tripod, helping maintain sharp results in challenging conditions. The 67mm filter thread allows for the use of standard front-element filters, and the lens supports both autofocus and manual focus modes for flexible operation. Weighing in at 1050 grams, this is a solid, well-built telephoto zoom that reflects the construction standards of Canon's L-series.
It is purpose-built for the Canon EF mount ecosystem and will perform on any compatible EF-mount DSLR body.
Pros — Canon EF 70-300mm f/4-5.6 L IS USM
- ✓Wide telephoto zoom range spanning 70mm to 300mm (specifications: minFocalLength / maxFocalLength)
- ✓Optical image stabilization included for handheld shooting (specifications: imageStabilization)
- ✓Full-frame coverage ensures no vignetting on full-frame Canon EF bodies (specifications: lensFormat)
Cons — Canon EF 70-300mm f/4-5.6 L IS USM
- ✗At 1050g, the lens is relatively heavy for handheld telephoto shooting over extended periods (specifications: weight)
- ✗Variable aperture design means maximum aperture narrows beyond 70mm (specifications: maximumAperture: 4, noted as variable f/4-5.6)
- ✗Canon EF mount only — not natively compatible with mirrorless camera systems without an adapter (specifications: mount.lens)
Videos — Canon EF 70-300mm f/4-5.6 L IS USM
Canon 70-300mm f/4-5.6 IS USM 'L' lens review with samples (Full-frame and APS-C) — Christopher Frost