Product DescriptionThis lens delivers over 4x telephoto zoom for Canon autofocus SLR Digital-camera and Film-camera models. AF is super-fast and silent with a ring-type USM, and it focuses down to 4.6 feet without rotating the front element. A new zoom lock button keeps the lens safe and secure when not in use or used at the widest lens perspective. Circular aperture producing attractive background defocus Micro USM and new AF algorithms for fast and quiet autofocus Only environmentally friendly lead-free glass used in lens construction F stop range 4.5-32 / 5.6-38 Closest Focusing Distance 1.4m / 4.6 ft. 4.2x zoom magnification Accepts 58mm size filters Dimensions (Length x Diameter) 3.9 x 3.2 / 99.9 x 82.4mm Weight 25.4 oz. / 720g
Editorial Reviews
From the Manufacturer
Featuring the latest 3-stop Image Stabilizer for outstanding camera shake reduction, the EF 70-300mm f4-5.6 IS USM zoom lens also features super responsive autofocus. Replacing the popular EF 75-300mm f4-5.6 IS USM, the world's first interchangeable lens with Image Stabilizer (IS), the lens is expected to appeal to serious amateur nature and sports photographers looking to achieve outstanding results while shooting hand held.
Image Stabilizer
IS dramatically reduces image blur caused by camera shake. The EF 70-300mm f4-5.6 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 1/500 second can obtain the equivalent result with a shutter speed of just 1/60 second, 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 f4-5.6 IS USM provides 2-mode IS for shooting immobile subjects. Mode 1 stabilizes 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 stabilizer motor vibrations.
Superb autofocus
The micro USM motor found in the EF 70-300mm f4-5.6 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.
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 f4-5.6 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 optimizing 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 color balance.
Focal length translates to 112-480mm equivalent in 35mm film format when fitted to EOS 20D and EOS 350D cameras.
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 f4-5.6 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 . 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 f4-5.6 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.
Accessories for the EF 70-300mm f4-5.6 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.
Customer Reviews
Having only used the lens for a few weeks, I have not had that many opportunities to see limitations, but overall the lens seems to do all that I could have asked of it. The autofocus seems to be very fast and accurate. It is not a "l" series lens, but for the price and the focal length, it is able to capture action frames as fast as the Rebel xsi it is mounted on will cycle. I am very pleased with the performance of this lens so far and would recommend it to anyone who is looking for an affordable way to outfit their digital SLR.....By solid lens so far
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