Friday, August 21, 2009
Wednesday, August 19, 2009
NEW CANON HYBRID IS
Several different preventative methods and corrective procedures have been introduced to compensate for errors caused by camera shake. Canon began their research in the 1980s. In 1995 Canon launched the EF 75-300mm f/4-5.6 IS USM, the world’s first interchangeable SLR camera lens to feature a mechanism that compensates for optical camera shake. Since then, the company has continued to produce a variety of interchangeable lenses with image stabilisation capabilities. There are 21 such lenses in its current product line-up, including the EF 200mm f/2L IS USM which features up to 5-stops of blur correction.
Canon’s newly developed Hybrid IS technology optimally compensates for angular camera shake (rotational) and shift camera shake (linear). Sudden changes in camera angle can cause significant blur in images taken during standard shooting. Blur caused by shift-based shaking, when a camera moves parallel to the subject, is more pronounced in macro and other close-up photography.
The new Hybrid IS technology incorporates an angular velocity sensor that detects the extent of angular camera shake which is found in all previous optical Image Stabiliser mechanisms, as well as a new acceleration sensor that determines the amount of shift-based camera shake. Hybrid IS employs a newly developed algorithm that combines the output of the two sensors and moves the lens elements to compensate for both types of movement. Hybrid IS dramatically enhances the effects of image stabilisation, especially during macro shooting.
Canon is actively engaged in ongoing research and development of interchangeable SLR camera lenses incorporating Hybrid IS technology. It is aiming for the early commercialisation and inclusion of the technology in a wide range of products.
Source: EOS Magazine (Robert Scott : robert.scott@eos-magazine.com)
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Saturday, August 8, 2009
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