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Canon PowerShot G7 - TechAmok
Canon PowerShot G7 - [gadgets] 07:28 AM EDT - Sep,22 2006 - post a comment
Long waited successor of G6 is here. New
Canon PowerShot G7 will replace G6 which was launched in August 2004. In
totally retro designed case Canon packed many new features. Main features of new
G7 are new generation of image processing DIGIC III processor, 10MPix CCD and 6x
(35-200mm , 35mm equiv) lens with optical stabilisation. Also some good things
are still here like hot shoe for external flash unit. It have software face
detection. ISO settings up to imaginative ISO1600. For now only thing that is
missing is RAW mode. Announced price for this camera is about $550. And it will
be available on market till the end of the year.
Optical Image Stabilizer
The PowerShot G7 uses a lens shift-type Image Stabilizer (IS) system to detect
and correct slight camera shakes that can cause image blur. Minute vibration
gyros detect lens tilting caused by hand shake. These signals up to 4,000 per
second are processed by a single-chip IS controller, which discriminates
between hand shake and intentional camera movements. Shake signals are sent to
the IS unit, which moves one of the lens elements accordingly to deflect the
light rays and cancel out the effects of shake. For improved accuracy and
responsiveness, the moving lens element is supported on tiny ceramic spheres. In
addition to minimising friction, ceramic spheres avoid some of the problems that
can affect metal spheres, such as thermal expansion and magnetism. The PowerShot
G7's optical IS allows photographers to shoot at shutter speeds up to 3 stops
slower with no perceptible increase in image blur.
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