Canon Powershot SX100 IS

Technologies Explained

DIGIC III

Canon’s DIGIC III (DIGital Imaging Core) image processor manages all of the camera’s primary functions to optimise operating efficiency. Advanced image processing algorithms deliver superb image detail and colour reproduction with accurate white balance. High-speed processing results in outstanding responsiveness, rapid auto focus and extended continuous shooting ability. DIGIC III also powers advanced Noise Reduction Technology and Face Detection AF/AE/FE.

Face Detection AF/AE/FE

Canon’s Face Detection AF/AE/FE system automatically detects up to nine faces within a frame before adjusting the focus, exposure and flash to ensure optimal results. It is able to determine which faces are intended to be the subject, instantly reverting to the standard AF system if no face is detected as the primary subject. The new Face Select and Track feature allows users to select one face from up to 35 detected faces using the dedicated Face Selector button, which will then be tracked as the subject of the scene for as long as the face remains within the frame.

Optical Image Stabilizer

The PowerShot SX100 IS uses a lens shift-type Image Stabilizer (IS) system to detect and correct slight camera shake that can cause image blur. Minute vibration gyros detect lens tilting caused by hand shake. These signals – 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 optical IS of the PowerShot SX100 IS allows photographers to shoot at shutter speeds up to 3 stops slower with no perceptible increase in image blur.

Digital Tele-Converter and Safety Zoom

Similar to placing an accessory lens on the front of the camera, Canon’s Digital Tele-Converter adds a constant zoom to every shot – 1.6x or 2.0x, depending on the image size selected. While optical converter lenses cause a reduction in aperture and consequently require a slower shutter speed, the Digital Tele-Converter maintains aperture size, reducing the risk of image blur.

Safety Zoom protects the image from interpolation at high levels of digital zoom, allowing users to extend zoom magnification without sacrificing image quality.

Level of Safety Zoom possible at each image size setting without loss of image quality: