Canon PowerShot A100 Service Manual page 14

Digital zoom function changes viewing angle continuously (4X: PS A200), (3.2X: PS 100)
Although the PowerShot A200/A100 have a single-focus lens,
the PowerShot A200 incorporates 4x digital zoom, and the
PowerShot A100 incorporates 3.2x digital zoom. So the
PowerShot A200 functions as a 39-156 mm zoom equivalent,
and the PowerShot A100 as a 39-125 mm zoom equivalent
(relative to a 35-mm film camera). However, because of the
characteristics of digital zoom, image quality is degraded at
the higher telephoto settings.
Even so, the actual effective pixels at the maximum telephoto
limit is about 120k (OSGA-equivalent).
Stress free operation with 1.4 sec. interval shooting
(during OVF:PA A100)
The new image engine installed in products since Spring
2001 is incorporated in the PowerShot A200/A100,
providing a photo interval of approx. 1.4 seconds (during
OVF:PS A100) to minimize stress on the user.
Furthermore, functions that usually require a long
processing time such as camera startup, digital zoom,
image transfer during playback and display magnification
can be performed with minimal stress.
* The shortest interval from one photo to the next
(details are shown in Fig. 2-4: Large/Fine mode).
However, this value depends on the subject.
Built-in flash with four-flashing modes
The built-in flash of the PowerShot A200/A100 can be set to four lighting modes: auto red-eye reduction, auto
on (off) and slow synchro, according to the photographic situation.
* When the flash is charging, the LCD moniter turns off owing to power saving function.
Low-Temperature Poly-Siillcon TFT LCD Monitor (approx. 120k pixels)
The LCD (1.5-inch) monitor in the PowerShot A200/A100 adopts a power-saving white LED backlight. Also,
the low-temperature polycrystalline silicon TFT with about 120,000 pixels, the highest resolution in this class,
provides extremely sharp images.
Total of nine image quality modes (3 recording pixels X 3 compression ratio)
With the PowerShot A200/A100, image quality can be selected from nine combinations of recording pixel reso-
lution (large, medium and small) and compression
ratio (super fine, fine and normal), supporting a wide
variety of photographic applications for the user.
Fig. 2-5 Image quality for each purpose
Recording Pixels
(Image Quality)
1600X1200
1280X960
1024X768
800X600
640X480
400X300
35
Fig. 2-3 Digital zoom
SW1
ON
Shutter time lag
approx. 0.05 sec.
Shooting Interval : approx. 1.4 sec.
Fig. 2-4 Picture taking sequence
Prints for high image quality
Large
Superfine
Nedium
Superfine
Small
Superfine
Archive
1-8
PowerShot A200
PowerShot A100
70 105
Focal length (mm)
(35mm film equivalent)
(Magnify vs. Image quality)
Exposure
SW2
Exposure
starts
ON stops
Shutter speed
Display
Large
Large
Fine
Normal
Nedium
Nedium
Fine
Normal
Small Small
Fine Normal
Net image
140
Next SW1
ON