Pentax Zoom 90-WR - Infinity-Landscape Shooting

8. INFINITY-LANDSCAPE
SHOOTING
Hard-to-autofocus subjects
Like many other autofocus cameras, the camera’s
autofocus system is highly precise, but not perfect,
so 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. Subjects which may fool the system
include:
1. Black objects like hair, which don't reflect
much light (and therefore don't reflect infrared
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 illuminated by
these light sources.
4 Glossy and reflective surfaces like glass,
mirrors, car bodies, etc.
5. Fast-moving objects, like trains in motion.
6. Water jets, water surface, smoke, flame,
fireworks, etc., which have no distinct or
consistent form, or a subject in mist.
When you wish to take a sharp picture of a distant
landscape or a distant subject through a window,
releasing the shutter while keeping the infinity-
landscape button depressed allows you to take distant
scenery with clarity.
If the green lamp lights up after you press the
shutter button halfway while keeping the infinity-
landscape button pressed, the infinity-landscape
mode is locked even if you raise your finger off the
infinity-landscape button.
• To use the infinity-landscape mode, first press the
infinity-landscape button and then the shutter
release button while pressing the infinity-landscape
button.
• When taking pictures in low light, switch to slow-
shutter-speed mode (Flash-OFF mode) (see page