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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 lifting
your finger off the shutter release button.
Hard-to-autofocus subjects
Like many other autofocus cameras, the cam¬
era's autofocus system is highly precise, but
not perfect. Some subjects may not be fo¬
cused as you wish. In such a case, use the
focus-lock technique on a subject near the
actual one and equidistant from the lens.
Subjects which may fool the system include:
1. Black objects like hair, which don't reflect
much light (and therefore don't reflect in¬
frared autofocus beams).
2. Wire netting, latticework, iron exercise-
bars, etc.
3. Flickering light sources such as neon signs,
fluorescent lamps, TV images, sunlight
coming through trees, etc. and subjects il¬
luminated by these light sources.
4. Glossy and reflective surfaces like glass,
mirrors, car bodies, etc.
5. Fast-moving objects, like trains or automo¬
biles in motion.
6. Water jets, water surface, smoke, flame,
fireworks, etc., which have no distinct or
consistent form, or a subject in mist.
15
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