Canon EF 70-200mm f/4L IS USM Zoom Lens

High-quality telephoto zoom with optical image stabilization.

The Canon EF 70-200mm f/4L IS USM is a lightweight, compact L Series telephoto zoom lens with Image Stabilizer. The optical Image Stabilization in the EF 70-200mm f/4L IS USM provides up to an incredible four stops of shake correction – a first for Canon IS lenses. The use of fluorite UD lens elements provides excellent optical performance in terms of resolution and contrast. These features, together with its water-and dust-proof construction, provide both the performance and portability to meet user demands.

Key Features:

Image Stabilizer
4-step Image Stabilizer (IS) extends low light options to previously unimaginable levels. Photographers normally shooting handheld at 1/250 sec can switch on IS to obtain a similarly steady and blur-free result with a shutter speed of just 1/15 second. IS reduces dramatically the image blur caused by camera shake. Gyro sensors detect unwanted vibrations, triggering the corresponding movement of a correcting lens group perpendicular to the optical axis. This alters the light path, returning the image to its correct position on the sensor or film plane.

Superb Autofocus
The lens' Ring-type USM employs ultra-sonic frequency vibrations to drive auto focus with unrivalled speed and near-silent operation. A powerful CPU and improved AF algorithm contribute to speed performance. Good holding torque stops the lens with precision and accuracy, the instant it arrives at the correct focus point and without overshoot. Photographers can switch to manual focus instantly and at any time simply by moving the manual focus ring without first having to switch out of auto focus mode.

f/4 Throughout the Zoom Range
The EF 70-200mm f/4L IS USM offers the highest possible optical quality with no change in aperture over the full focal range of the lens. This allows photographers to set exposure at the widest aperture and zoom all the way through to 200mm without having to decrease shutter speed. Lens length does not alter during zooming and the front lens element does not rotate during zooming or focusing.

Amazing Image Quality
The innovative optical system limits lens size and improves image clarity over the total image area. 1 x Fluorite element and 2 x Ultra-Low Dispersion glass elements are used to eliminate the secondary chromatic aberrations that otherwise reduce sharpness and introduce color fringing.

Additional Features:

• Circular aperture diaphragm for even background blur
• Environmental seals for dust and moisture resistance
• Super Spectra coatings to suppress ghosting and flare
• 1.2m minimum focus distance