Canon S90 用户手册

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页码 179
62
You can use the digital zoom to zoom up to a maximum of 15x and capture 
subjects that are too far away for the optical zoom 
 to enlarge. The 
images may appear coarse, however, depending on the recording pixel 
setting 
 and the zoom factor used.
Move the zoom lever toward 
i.
Hold the lever until zooming stops.
The zoom will stop when the largest 
possible zoom factor without image 
deterioration has been reached, and the 
zoom factor will appear.
Move it toward 
i again.
The digital zoom will zoom in even further 
on the subject.
Zoom Factors at which Images Deteriorate
Zooming in More Closely on Subjects 
(Digital Zoom)
Recording Pixels
Optical Zoom 
(28 – 105 mm)*
Digital Zoom 
(105 – 420 mm)*
: No image deterioration (zoom factor appears white)
: Image deterioration (zoom factor appears blue)
3.8x
3.8x
5.3x
8.7x
15x
: Maximum zoom factor without deterioration (Safety Zoom)
* Focal length (35mm equivalent)