Table of Contents
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Explanation of terms
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Automatic white balance
White balance adjustment recognizes the colour of light and
adjusts so the white colour will become a pure white. The movie
camera determines the hue of light that comes through the lens
and white balance sensor, thereby judging the recording
condition, and selects the closest hue setting. This is called
automatic white balance adjustment. However, since the movie
camera only stores white colour information under several light
sources, automatic white balance adjustment does not function
normally under the other light sources.
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Outside of the effective range of automatic white balance
adjustment, the image will become reddish or bluish. Even
within the effective range of automatic white balance
adjustment, the automatic white balance adjustment may not
function properly if there is more than one light source. For light
outside the functional auto white balance adjustment range,
use the manual white balance adjustment mode.
1) The effective range of automatic white balance adjustment
on this movie camera
2) Blue sky
3) TV screen
4) Cloudy sky (rain)
5) Sunlight
6) White fluorescent lamp
7) 2 hours after sunrise or before sunset
8) 1 hour after sunrise or before sunset
9) Halogen light bulb
10) Incandescent light bulb
11) Sunrise or sunset
12) Candlelight
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White balance
The image recorded by the movie camera may become bluish
or reddish under the influence of light sources. To avoid such
phenomena, adjust the white balance.
White balance adjustment determines the white colour under
different light sources. By recognizing which is the white colour
under sunlight and which is the white colour under a fluorescent
lamp, the movie camera can adjust the balance among the
other colours.
Since white colour is the reference of all colours (light), the
movie camera can record pictures in a natural hue if it can
recognize the reference white colour.
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Auto focus
Auto focus automatically moves the focusing lens forward and
backward inside the movie camera 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 centre only.
Due to these characteristics, auto focus does not work correctly
in the following situations. Record pictures in the manual focus
mode.
Recording a subject with one end located closer to the
movie camera and the other end farther away from it
≥As auto focus adjusts at the centre of an image, it may be
impossible to focus on a subject that is located in both the
foreground and background.
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.
Recording a subject that is surrounded by objects with
glossy surfaces or by highly reflective objects
≥The recording subject may become blurry because the
movie camera focuses on the objects with glossy surfaces
or on highly reflective objects.
Recording a subject in dark surroundings
≥The movie camera 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.
Recording a subject with little contrast
≥A subject with little contrast, such as a white wall, may
become blurry because the movie camera achieves focus
based upon the vertical lines of an image.
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