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- Super telephoto zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 320-640mm equivalent focal length.
- Built-in 1.4x extender allows you to instantly extend your reach to 280-560mm (or 448-896mm equivalent with APS-C cameras) simply by flipping the left-hand switch. Since the extender is integrated within the lens housing, it is optically matched to the lens for improved imaging performance and also fully maintains the lens's weather sealing.
- Constant f/4 maximum aperture, without the teleconverter in position, offers consistent illumination throughout the zoom range. When the 1.4x teleconverter is engaged, the maximum aperture is effectively f/5.6.
- One fluorite element and four ultra-low dispersion elements are used to greatly reduce color fringing and chromatic aberrations in order to achieve greater clarity and color accuracy.
- Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.
- An Optical Image Stabilizer helps to minimize the appearance of camera shake by up to four shutter speed stops to better enable working in low-light conditions and with slower shutter speeds. Three distinct IS modes are available: standard single-shot mode, a panning-optimized mode, and a mode that only activates the Image Stabilizer during the exposure.
- A ring-type Ultrasonic Motor (USM), along with optimized focusing algorithms and a high-speed CPU, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
- Focus Preset function is available to quickly recall a programmed focusing position.
- Focus Limiter switch lets you constrain the focusing to different ranges for faster performance to suit different applications.
- A Power Focus setting is available, and allows you to electronically and smoothly adjust your focus position to suit video recording. This setting utilizes a dedicated ring in front of the main focusing ring and allows you to use one of two different focusing speeds.
- Rounded nine-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.
- As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.
- Fluorine-coating on exposed elements affords protection to the optical system, resists smudging and fingerprints, and is easier to clean.
- Removable rotating tripod collar is included and benefits working with the lens atop a tripod or monopod.
- Compatible with optional EF 1.4X and EF 2X teleconverters.
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Canon EF 200-400mm F/4L IS USM Extender 1.4x Specification |
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| Focal Length | 200 to 400mm |
| Maximum Aperture | f/4 |
| Minimum Aperture | f/32 |
| Lens Mount | Canon EF |
| Lens Format Coverage | Full-Frame |
| Angle of View | 12° to 6° 10' |
| Minimum Focus Distance | 6.56' / 2 m |
| Maximum Magnification | 0.15x |
| Optical Design | 25 Elements in 20 Groups |
| Diaphragm Blades | 9, Rounded |
| Focus Type | Autofocus |
| Image Stabilization | Yes |
| Tripod Collar | Removable and Rotating |
| Filter Size | 52 mm (Drop-In) |
| Dimensions (ø x L) | 5.04 x 14.41" / 128 x 366 mm |
| Length at Maximum Extension | 14.37" / 365 mm |
| Weight | 7.98 lb / 3.62 kg |
- Canon EF 200-400mm f/4L IS USM Extender 1.4x Lens
- Canon E-145C Lens Cap for EF 300mm f/2.8L IS II USM
- Canon Lens Dust Cap E (Rear Lens Cap)
- Canon Lens Wide Strap B
- Canon ET-120 Lens Hood for EF 300mm f/2.8L IS Lens
- Canon Lens Case 200-400 for Canon EF 200-400mm f/4L IS USM Lens with Internal 1.4x Extender
- Canon 52mm Drop-in Gelatin Filter Holder (Black)
- Tripod Mount
- Strap for Hard Case
- Limited 1-Year Warranty