Canon POWERSHOT S500 User Manual page 41

The viewfinder can be used to conserve power by setting the LCD monitor
to Off (p. 33) while shooting.
I
I
Shows the center of the image
View Finder
Image Seen in Viewfinder vs. Recorded Image
Usually the recorded image is wider than the image seen in the
viewflnder. Confirm the actual image size with the LCD monitor.
The image recorded may differ from the image seen in the viewfinder
due to the distance between the viewfinder and lens (especially with
close-ups). If you use the viewfinder to take close-up shots, portions of
the close-up subject may not appear in the recorded image. Use the
LCD monitor when taking close-up shots.
Aboutthe AutofocusFunction
This camera employs AiAF (artificial intelligence autofocus) technology
which uses a broad metering field to calculate the focal distance with
high precision. It delivers a crisp focus even when the photographic
subject is slightly off-center.
The AiAF function can be turned off so that the autofocus is metered from
a fixed AF frame at the center of the field (p. 76).