Auto Focus - Panasonic SDR-S100 Operating Instructions Manual

Auto focus

The lens is moved forward or backward
automatically to bring the subject into
focus.
Auto focus has the following charac-
teristics.
≥ 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 centre 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 centre 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 glass
The subject behind the glass will not be
focused because the focus is on the dirty
glass.
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.
Recording a subject that is
surrounded by objects with glossy
surfaces or by highly reflective
objects
Since whatever is shiny or listens 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 surround-
ings
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 children
who are running around wildly, 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.
Concerning MPEG2 motion
pictures
"MPEG" stands for Moving Pictures
Experts Group. It refers to a format for
compressing video.
MPEG2 enables motion pictures to be
played back more smoothly and
attractively by sending the image data at
a rate of 25 frames per second.
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