Common, Conventional Features; Zooming In Closer On Subjects (Digital Zoom) - Canon POWERSHOT SX500 IS User Manual

When distant subjects are too far away to enlarge using the optical zoom,
use digital zoom for up to about 120x enlargement.
Zoom Factor
:: Move the zoom lever toward
<r-_-]>.
Hold the lever until zooming stops.
Zooming stops at the largest possible
zoom factor (before the image becomes
noticeably grainy), which is then indicated
on the screen.
Move the zoom lever toward
<ESJ> again.
The camera zooms in even closer on the
subject, using digital zoom.
(_ Moving the zoom lever will display the zoom bar (which indicates
the zoom position). The color of the zoom bar will change
depending on the zoom range.
White range: optical zoom range where the image will not appear
grainy.
Yellow range: digital zoom range where the image is not
noticeably grainy (ZoomPlus).
Blue range: digital zoom range where the image will appear
grainy.
Because the blue range will not be available at some resolution
settings (_68) the maximum zoom factor can be achieved by
following step 1.
Zoomed images may look grainy, under some resolution settings
(_68) and zoom factors. In this case, the zoom factor is shown
in blue.
6O