Canon EF 70-300mm f/4-5.6 IS USM Lens Press Release

Canon EF 70-300mm f/4-5.6 IS USM Lens Press Release

Canon’s new telephoto zoom lens with Image Stabiliser – the EF 70-300mm f/4-5.6 IS USM

Canon, leader in photographic and imaging technology, is pleased to announce the launch of the EF 70-300mm f/4-5.6 IS USM zoom lens. Featuring the latest 3-stop Image Stabiliser (IS) for outstanding camera shake reduction, the lens is also equipped with super responsive auto focus. Replacing the popular EF 75-300mm f/4-5.6 IS USM, the world’s first interchangeable lens with IS, the lens is expected to appeal to serious amateur nature and sports photographers looking to achieve outstanding results while shooting hand held.

Image Stabiliser

IS dramatically reduces image blur caused by camera shake. The EF 70-300mm f/4-5.6 IS USM features Canon’s latest 3-stop IS, a one-stop improvement over its predecessor. This allows shutter speeds up to three stops slower than would otherwise be possible, with no perceptible increase in image blur. Photographers normally shooting a 300mm frame handheld at 1/500s can obtain the equivalent result with a shutter speed of just 1/60s, vastly extending options in low light conditions.

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.

The EF 70-300mm f/4-5.6 IS USM provides 2-mode IS for shooting immobile subjects. Mode 1 stabilises the image along both the horizontal and vertical axes. For shooting while panning to follow a moving subject, Mode 2 turns off correction in the panned direction and prevents the effect of dragging the subject back through the frame. IS switches off automatically when the camera is mounted on a tripod, thus preventing feedback loops between the IS sensor and stabiliser motor vibrations.

Superb auto-focus

The micro USM motor found in the EF 70-300mm f/4-5.6 IS USM employs ultra-sonic frequency vibrations to drive auto focus with unrivalled speed and near-silent operation. Good holding torque stops the lens with precision and accuracy, the instant it arrives at the correct focus point and without overshoot. A high speed CPU and optimised AF algorithm result in a significant increase of AF speed compared to that of its predecessor.

A zoom ring locking mechanism is provided that locks the zoom at the wide-angle setting. This ensures that the lens is carried or stored in its most compact position, preventing possible damage caused by the lens extending and hitting obstacles when being carried mounted on a camera with a strap.

Pleasing defocused background

The EF 70-300mm f/4-5.6 IS USM employs an electro magnetic diaphragm (EMD) with a circular aperture. This helps create an attractive, even defocused background when isolating a subject at large apertures.

Image quality

By optimising Super Spectra lens coatings and lens element shaping, Canon’s engineers have been effective in suppressing flare and ghosting – more prone to occur with digital cameras due to reflection off the image sensor. By increasing light absorption, coatings reduce reflections off lens element surfaces to deliver crisp, undistorted images with natural colour balance.

Focal length translates to 112-480mm equivalent in 35mm film format when fitted to EOS 20D and EOS 350D cameras.

The EOS system

The EF 70-300mm f/4-5.6 IS USM includes distance metering information, providing compatibility with the E-TTL II flash system of late model cameras such as the EOS-1D Mark II N and EOS 5D[1]. When used in conjunction with Canon’s range of EX Speedlite flash units, the lens passes distance information to the flash algorithm for markedly improved flash exposure metering.

Accessories for the EF 70-300mm f/4-5.6 IS USM include the lens hood ET-65B and the lens pouch LP1222. In keeping with Canon’s Kyosei philosophy of living in harmony with the environment, the lens features only lead-free glass.

Availability and reader enquiries

The Canon EF 70-300MM f/4-5.6 IS USM lens will be available from October 2005 priced £469.00 RRP inc VAT/ €679.99 RRP inc VAT.

Reader enquiries

UK – 08705 143723 / www.canon.co.uk
Eire – (01) 2052400 / www.canon.ie

[1] The following EOS cameras also support E-TTL II: EOS-1Ds Mark II, EOS-1D Mark II, EOS 20D, EOS 350D, EOS 30V and EOS 300X

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