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Author Topic: Image Stabilizer (IS) Lens  (Read 437 times)

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Image Stabilizer (IS) Lens
« on: June 28, 2012, 02:58:16 AM »
Canon Optical Image Stabilizer technology makes handheld photography more practical at slow shutter speeds, accommodating more low-light shooting situations than ever before.

Camera shake typically occurs at shutter speeds less than 1/ [focal length], resulting in image blur. Canon Optical Image Stabilizer technology uses miniature sensors and a high-speed microcomputer built into the lens.

The sensors analyze vibrations and apply correction via a special stabilizing lens group that shifts the image parallel to the focal plane. Motion blur is canceled, resulting in a sharper image. With Optical

Image Stabilization, it’s like gaining up to four stops. Canon Optical Image Stabilizer technology is built into many EF and EF-S lenses and outperforms in-camera stabilization technologies found in other cameras by allowing for more movement of the stabilizing lens group. Especially with telephoto lenses, as the lens focal length increases, the effect of shake and the degree of correction needed to cancel it increases as well.

With the Optical Image Stabilizer in the lens, Canon can equip each IS lens with the stabilizer it needs for effective shake correction. Other systems are limited by how far they can move an image sensor, and as a result their stabilization is less effective as telephoto lengths get longer. Also, the result of Optical Image Stabilization can be seen right in the viewfinder—impossible with some other stabilizer systems.

 

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