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The Digital IXUS uses a narrow-pitch
CSP (Chip Size Package), which allows Canon engineers to integrate three circuit
boards typically found in other digital cameras, into one main circuit board. The
camera's lens was completely reconfigured to provide the high-resolution, low distortion
optics needed for a 2.11-megapixel CCD. Despite the camera's 2x zoom lens, the retractable
lens design keeps the size of the optics within a coin-size, 20mm diameter. Additionally,
the retractable lens enables the LCD monitor and lens to be positioned back-to-back
at the center without making the body too thick.
The Digital IXUS uses a light guide flash, which has a proven record in film cameras
for its compactness, high efficiency, and uniform light distribution. The new flash
unit is compact because it does not need a fresnel lens or a large reflector, shortening
the overall depth of the unit. The light guide flash also provides a more focused
and uniform illumination to match the desired area.
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An F1 car on display |
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Fill-in flash mode |
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A LRT train heading towards its destination |
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In addition, the camera is equipped with a three-point AiAF autofocus system that
permits the camera to automatically select the primary subject, even if the subject
is off-center. The above photos of the F1 cars, including the one shot using fill-in
flash, and that of the LRT train, are examples of the Digital IXUS' AiAF and light
guide flash system. However, fill-in flash does not work very well for indoor situations
if the subject is very close to the camera, like close-up portraits, where dark backgrounds
are likely to occur instead.
The Digital IXUS features a 1.27-inch, 2.11-megapixel CCD sensor that creates full
color or black-and-white images up to 1,600x1,200 pixels when set to the camera's
Large resolution mode. The camera also offers an additional resolution setting of
640x480 when set in the Small mode, which is ideal for on-screen applications, such
as Web sites and CD-ROMs and allows more images to be recorded on a single CompactFlash
memory card. The new camera is compatible with Type I CompactFlash Cards and will
be shipped with a 8MB CF card.
In order to maximize the capabilities of the 2.11-megapixel CCD, the Digital IXUS
is equipped with a dedicated digital signal processing integrated circuit (IC) to
achieve high-speed and complete processing of image details. All images are recorded
as JPEG files and a built-in buffer memory allows continuous burst-mode shooting
of up to 2 frames per second when set to its maximum resolution of 1600x1200. The
interval between shots in single frame mode is only 1.7 seconds. In addition, basic
operations such as camera start-up, high-speed search mode during playback, image
enlargement and image scrolling can now be executed swiftly, due to the digital signal
processing IC's high-speed compression and decompression operations.
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