Canon PowerShot A300, Service Manual

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1-7
2 Features
2-1 High Image Quality
-Approx. 3.2M camera effective pixel CCD (Total of Approx. 3.3M-pixels)
The PowerShot A300 comes with a CCD sensor with approx.
3.2-mega effective pixels (Approx. 3.3 megapixels in
total), which is similar to the IXY DIGITAL 320 sen-
sor.
The area of this CCD sensor chip has been reduced by
a remarkable 39 percent from the previous 1/1.8-inch
approx. 3.2-effective-megapixel CCD sensor (approx.
3.3 total megapixels) found on the PowerShot G1/S30.
However it achieves the equivalent performance to the
previous sensor owing to improvement of the picture
element’s structure and the electronic charge’s drive method.
-High resolution single-focus 5mm f/3.6 lens (35mm film equivalent : 33mm)
The PowerShot A300 is equipped with the 5 mm, f/2.8 single-focal-
length lens used on the PowerShot A200/A100. The lens
consists of 5 elements in 5 groups including one aspherical
(single-sided) lens. Focusing is accomplished by a full
sprocket method in which all five lenses move.
The 35 mm equivalent focal length of the lens has become
slightly wider
— 33 mm compared with 39 mm for the Pow-
erShot A200/A100 — due to the change in the screen size
of the CCD sensor. This allows the camera to get more out
of composite photos and landscape shots.
For the same reason as the change in focal length, the maximum aperture has changed from f/2.8 to f/
3.6.
- High definition and fast processing with the Digital Imaging Processor "DIGIC"
The PowerShot A300 comes equipped with the
"DIGIC"a digital imaging processor. DIGIC achieves
enhanced high picture quality by improving
signal processing algorithms as the successor of
prior processor.
Furthermore it saves power.
The following three elements are the principle
contributions to the PowerShot A300.
–Improved picture quality
–Improved AF accuracy
–Improved processing speed
*The PowerShot A300 has no video and audio output
Figure 2-1 Chip relative area comparison
Figure 2-2 Lens construction (Conceptual)
Figure 2-3 BlockDiagram