Canon 70-300 IS USM Lens Overview

The Canon 70-300 IS USM Lens should appeal to serious amateur nature and sports photographers, incorporating a 3-stop image stabilizer, superb auto focus and fantastic image quality.

Shutter speeds of up to three stops slower than otherwise possible is achieved with Canon's latest 3-stop image stabilizer and image blur is reduced significantly, creating outstanding hand held photography results. Options in low-light conditions are very much extended by shooting at a shutter speed of 1/60 per second with the Canon 70-300 IS USM Lens, as opposed to shooting a 300mm handheld at 1/500 per second. Unwanted vibrations are picked up by gyro sensors. The Canon 70-300 IS USM Lens provides 2-mode image stabilizer for shooting immobile objects. Mode 1 stabilizes the object along the horizontal and vertical axes. Mode 2 turns off correction in the panned direction and prevents the effect of dragging the object back through the frame when following a moving object. The image stabilizer switches off automatically when the camera is mounted on a tripod.

Canon EF 50mm

The micro USM motor in the Canon 70-300 IS USM Lens drives super responsive auto focus with unrivaled speed and virtually silent operation. The instant it arrives at the correct focus point the lens stops with precision and accuracy. The Canon 70-300 IS USM Lens has a big increase of AF speed compared to that of its predecessor. At the wide-angle setting the zoom is locked by a zoom ring locking mechanism, preventing possible damage by carrying and storing the lens in its most compact position. The lens allows for increased light absorption and reflections off the lens element surfaces are reduced to deliver crisp, undistorted images with natural color balance.

Canon 70-300 IS USM Lens Overview

The Canon 70-300 IS USM Lens features only lead-free glass which is in keeping with Canon's Kyosei philosophy (living in harmony with the environment). The lens measures 3 inches in diameter and is 5.6 inches long, weighing 22.2 ounces and includes distance metering information and is therefore compatible with flash systems of late model cameras. Accessories include the lens hood and pouch and it also has a 1-year warranty.

Canon 70-300 IS USM Lens Overview

Canon SLR Lens Overview - EF-S 17mm - 85mm F-4.0-5.6 USM IS Image Stabilized Autofocus Zoom Lens

The EF-S series of lenses, by Canon, are exceptional lenses applicable for Canon digital SLR cameras such as: the EOS 20D and Rebel models. Why? The key design feature aims to match the APS-C imaging sensor with the image circle. How? This matching objective is achieved by reducing distance between the rear of the lens and the focal plane, thus decreasing the size of the image circle.

The result? Canon's EF-S lenses are more efficient in terms of: weight and cost of wide-angle lenses while ensuring superior image quality, resolution and contrast at all focal lengths.

Canon EF 50mm

As a member of the EF-S family of lenses, the 17-85 F4 IS USM is a strong performing wide-angle to telephoto lens. Its list of features include: Image Stabilization for hand-held situations; and is optically optimized for the digital SLR camera; a ring-type USM designed for fast and silent auto focus. The full-time manual focus in AF mode is also a useful addition.

Canon SLR Lens Overview - EF-S 17mm - 85mm F-4.0-5.6 USM IS Image Stabilized Autofocus Zoom Lens

The EF-S 17-85mm f/4-5.6 IS USM lens provides a 5x zoom ratio and an angle of view equivalent to a 27-136mm lens on a 35mm camera. Also present in this lens is a glass-molded aspherical lens element with aspherical surfaces on both sides. The result, superb image quality through the full zoom range. The focusing distance is impressive at a distance of 12 inches at all focal lengths. Finally, the EF-S 17-85mm IS lens, when compared to the EF 28-135mm IS lens, is 5% shorter and 12% lighter, and accepts 67mm filters.

Canon SLR Lens Overview - EF-S 17mm - 85mm F-4.0-5.6 USM IS Image Stabilized Autofocus Zoom Lens