Pentax IQZoom EZY-S - Page 21

HARD-TO-AUTOFOCUS SUBJECTS
3 While holding the shutter release button
halfway, re-aim the camera or recompose the
picture, then release the shutter by depressing
the shutter release button ail the way.
Note:
• You can release the focus lock simply by lifting
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 this case, use the focus-lock technique
on another subject near the actual one and
equidistant from the lens. Subjects which may
fool the autofocus system include:
a) Black or very dark objects, which don’t reflect
much light (and therefore don’t reflect
infrared autofocus beams.)
b) Wire netting, latticework, iron exercise-bars,
etc.
c) Flickering light sources such as neon signs,
fluorescent lamps, TV images, sunlight com¬
ing through trees, etc. and subjects illuminat¬
ed by these light sources.
d) Glossy and reflective surfaces like glass, mir¬
ror, car bodies, etc.
, e) Fast-moving objects, like trains or automo¬
biles in motion.
f) Water jets, water surface, smoke, flame, fire¬
works, etc. which have no distinct or consis¬
tent form, or a subject in mist.
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