Canon E850 - Manual (Page 43)

Subjects Not Suitable for Auto Tracking Focus
When there is an object
with high contrast in
the background (such
as a bright, shiny
object). Subjects with little or
no contrast (such as a
object of the same
colour).
Dark subjects
Subjects with little or
no contrast to their
background
Rapidly moving
subjects
Two subjects, one in
front of the other at the
same focal distance
(especially if one
subject has a stronger
contrast).
Many moving subjects
of roughly the same
brightness in the
viewfinder.
Hint:
• The camera follows the contrast of the subject; however if the subject is moving too quickly, or if the camera is
moved suddenly (tilting, panning, etc.), the camera may be unable to track the subject (this tends to occur
particularly when recording at close range using telephoto). When this happens, change framing to middle or
wide angle then resume shooting.
* Zooming in on a person often causes their contrast to decrease suddenly. In such cases, reframe the subject
as described above and resume shooting.
Note:
• If the subject is not focused precisely, auto tracking focus may not track the subject correctly.
Auto Tracking Focus
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