Canon PowerShot A300, Service Manual

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2-2 Full Features
-5-point AiAF and 1-point AF selectable
The PowerShot A300 come with a “5-point AiAF” , which increases the
number of AiAF measurement zones from the previous three (PowerShot
A200/A100) to five.
This improved AiAF system makes precise focusing possible regardless
of the position of the subject or the shooting orientation (vertical or hor-
izontal). When focusing, the positions of the focused measurement
zones are displayed in green (when two or more positions are in focus,
all focused measurement zones are displayed).
The cameras are also equipped with standard single center-point AF,
enabling users to select the easiest AF function to suit the shooting con-
ditions.
-Digital zoom function with continuously changing angle of view (Approx. 5.1x)
The digital zoom magnification of PowerShot A300 enlarges to approx. 5.1x owing to employment of 3M-pixel
CCD. It can adjust the field of view from 33mm to 168mm (35 mm film equivalent)
Furthermore, several dozen image input positions are calibrated for the monitor display to ensure a
smooth digital zoom of the image on the monitor display. The actual zoom position can be stopped
in seven positions in consideration of practicability.
Figure 2-5: 5-Point AiAF
Figure 2-6:Digital zoom (Couceptual)