The Canon EF 200-400mm ƒ/4 L IS USM Extender 1.4x Photography Lens with EF-Mount is a telephoto 200-400mm zoom covering Full Frame sensors. Telephoto focal lengths flatten perspective and lift a subject clear of its background, which portrait and sports photographers rely on. A ƒ/4 maximum aperture suits well-lit work and subjects that want more depth of field, closing to ƒ/32. Optical stabilization steadies the frame, widening the range of shutter speeds that can be used handheld. Autofocus lets the camera's own subject detection drive the lens, which is what makes it usable for tracking moving subjects and for video. It mounts via EF-Mount. Closest focus is 6.6 ft, for a maximum magnification of 1:6.7.
Key Features
Telephoto Full Frame Coverage
The lens covers Full Frame sensors. A telephoto field of view compresses distance and separates a subject from its background, the range portrait and sports photographers work in.
ƒ/4 Maximum Aperture
ƒ/4 is a moderate maximum aperture, suited to well-lit conditions and to work that wants deeper depth of field, such as landscape and product photography. It closes to ƒ/32.
Autofocus
The lens focuses under the camera's control, so hybrid shooters can use the body's own subject detection and tracking rather than pulling focus by hand — the difference between catching a moving subject and losing it.
Optical Image Stabilization
Optical stabilization compensates for hand movement, extending the range of shutter speeds usable handheld and steadying the frame for handheld video.
1:6.7 Maximum Magnification
A maximum magnification of 1:6.7 sets how large a small subject renders on the sensor, with a closest focus of 6.6 ft.
52mm Drop-In Filter
Filters drop into a slot near the mount rather than screwing onto the front, so a polarizer or neutral-density filter can be changed without disturbing a lens hood or a matte box.
