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Canon EF 70-300mm f/4-5.6 IS USM Telephoto Zoom Lens for Canon SLR Cameras
- 70-300mm focal length
- EF mount; telephoto zoom lens
- 3-stop Image Stabilizer for outstanding camera shake reduction
- Electro-magnetic diaphragm (EMD) helps create an attractive, even defocused background at large apertures
- Ring-type UltraSonic Motor (USM)
Technical data
- Item Package Quantity: 1
- Camera Magnify Power: 0.26
- Lens Type: zoom
- Lens System Special Functions: Zoom
- Maximum Aperture Range: F/4.0-5.6
- Minimum focal length: 70 millimeters
- Maximum focal length: 300 millimeters
- Minimum Focal Range: 5 feet
- Focus Type: auto-focus
- Optical zoom: 4.3
- Real Angle Of View: 34
- Mounting Type: Canon EF
- Weight: 22.2 Ounces
- Item Display Diameter: 3 inches
- Length: 6 inches
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.
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.
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.
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¿¿. 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.
