Canon EF 400mm f/4 DO IS II USM Telephoto
The Canon EF 400mm f/4 DO IS II USM is a lens from Canon. Used copies start from $3,999 on GearFocus, with buyer protection on every purchase.
Canon EF 400mm f/4 DO IS II USM Telephoto
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Lens Overview — Canon EF 400mm f/4 DO IS II USM
Key Features — Canon EF 400mm f/4 DO IS II USM
Diffractive Optics Element: Canon's DO lens technology uses a multi-layer diffractive optical element to reduce chromatic aberration while keeping the lens significantly shorter and lighter than conventional super-telephoto designs.
400mm f/4 Aperture: A fast f/4 maximum aperture at 400mm delivers strong subject separation and supports faster shutter speeds in lower light conditions common in wildlife and sports photography.
Image Stabilization II: Canon's second-generation IS system provides up to 4 stops of shake correction, with a dedicated panning mode for tracking fast-moving subjects.
Ring-Type USM Autofocus: Canon's ring-type Ultrasonic Motor delivers fast, near-silent autofocus with full-time manual focus override without switching out of AF mode.
Canon EF Mount: Compatible with the full range of Canon EF-mount DSLR bodies, including full-frame and APS-C sensors, and also adaptable to Canon RF-mount mirrorless cameras via the EF-EOS R adapter.
Compact Super-Telephoto Build: The DO optical design results in a noticeably shorter and lighter lens body compared to traditional 400mm f/4 lenses, improving portability for field use.
Lens Specifications — Canon EF 400mm f/4 DO IS II USM
| Spec | Detail |
|---|---|
| Use Cases | Sports, Wildlife, Birding, Astrophotography |
| Lens Mount | Canon EF |
| Focus Type | Auto Focus, Manual Focus |
Description — Canon EF 400mm f/4 DO IS II USM
The Canon EF 400mm f/4 DO IS II USM Telephoto is a long telephoto lens built around the Canon EF mount standard. The EF mount is Canon's established DSLR lens interface, providing connectivity with a broad range of Canon camera bodies. With only mount data confirmed in the current specifications, the key verified detail for this lens is its Canon EF mount, which positions it within Canon's extensive DSLR ecosystem.
Buyers invested in the Canon EF system will find this lens mount-compatible with their existing bodies. For full technical details including optical design, weight, dimensions, autofocus performance, and stabilization specs, prospective buyers should reach out to the seller directly or consult Canon's official product documentation to ensure this lens meets their shooting requirements.
Pros — Canon EF 400mm f/4 DO IS II USM
- ✓Canon EF mount ensures broad compatibility with Canon's EF-mount DSLR camera lineup
Cons — Canon EF 400mm f/4 DO IS II USM
- ✗Detailed optical and technical specifications are not available in the current product data, making direct comparison difficult
- ✗Buyers cannot verify features such as stabilization, autofocus system, or physical dimensions from the listed specs alone
- ✗Limited specification data means buyers should confirm key details with the seller before purchasing
Videos — Canon EF 400mm f/4 DO IS II USM
Canon EF 400mm f/4 DO IS ii USM lens review with samples (Full-frame & APS-C) — Christopher Frost
Frequently Asked Questions — Canon EF 400mm f/4 DO IS II USM
What camera mount does this lens use?+
This lens uses the Canon EF mount. It is compatible with Canon DSLR cameras that feature the EF mount system.
Is this lens compatible with Canon mirrorless cameras?+
The confirmed mount for this lens is Canon EF. Compatibility with Canon mirrorless systems would depend on the use of an appropriate mount adapter, which is not referenced in the available specifications.
What optical or autofocus specs are available for this lens?+
The current product data only confirms the Canon EF mount. Detailed optical, autofocus, and stabilization specifications are not present in the available data, so buyers should contact the seller for full technical details.
Is this lens suitable for full-frame Canon bodies?+
The Canon EF mount is used across Canon's full-frame and APS-C DSLR bodies. However, sensor compatibility beyond mount type is not specified in the available product data.