Hard-To-Autofocus Subjects - Pentax IQZoom 115G Operating Manual

HARD-TO-AUTOFOCUS-SUBJECTS
3 While depressing the shutter release but¬
ton halfway, re-aim the camera or recom¬
pose the picture, then release the shutter.
Note:
• You can release focus lock simply by lift¬
ing your finger from the shutter release
button.
The autofocus system is highly precise, but
not perfect. Some subjects may not focus as
you wish. In such a case, use the focus-lock
technique on a subject near the actual one
and equidistant from the lens. The subjects
which may fool autofocus system include:
a) Extremely low-contrast subjects such as a
white wall or blue sky in the autofocus
frame.
b) Subjects which don't reflect much light in
the autofocus frame.
c) Subjects which moving too fast.
d) Subjects with horizontal lines or with
finely complex or detailed pattern in the
autofocus frame.
e) Multiple subjects in foreground of the
autofocus frame.
f) Subjects positioned against reflected light
or strong backlight or with extremely
bright background.
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