Auto Focus - Panasonic VDR-D105 Operating Instructions Manual

Explanation of terms

Auto focus

The lens is moved forward or backward
automatically to bring the subject into focus.
Auto focus has the following
characteristics.
≥ Adjusts so that the vertical lines of a subject
are seen more clearly.
≥ Attempts to bring an object with higher
contrast into focus.
≥ Focuses on the screen center only.
Due to these characteristics, auto focus does
not work correctly in the following situations.
Record pictures in the manual focus mode.
Recording distant and close-up objects at
the same time
Since the unit focuses on whatever is at the
center of the screen, it is difficult to bring the
background into focus when close-up objects
are placed in focus. When recording people
with distant mountains in the background, you
cannot focus on both the subject which is
close-up and the objects which are in the
distance.
Recording a subject behind dirty or dusty
window
The subject behind the window will not be
focused because the focus is on the dirty
window.
Similarly, when recording something on the
opposite side of a road with heavy traffic, a
vehicle that happens to pass by may be
brought into focus.
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Recording a subject that is surrounded by
objects with glossy surfaces or by highly
reflective objects
Since whatever is shiny or glistens is brought
into focus, it is hard to focus on the subject to
be recorded. The focus may become blurry
when recording subjects at the seashore, in
night views or in scenes involving fireworks or
special lights.
Recording a subject in dark surroundings
The unit cannot focus correctly because the
light information that comes through the lens
decreases considerably.
Recording a fast-moving subject
As the focus lens-inside moves mechanically, it
cannot keep up with a fast-moving subject.
When, for example, recording a sports event
with fast moving subjects, the focus may lose
its sharpness.
Recording a subject with little contrast
It is easy to bring subjects with a sharp contrast
or vertical lines or stripes into focus. This
means that a subject with little contrast, such
as a white wall, may become blurry because
the unit achieves focus based upon the vertical
lines of an image.