Bedienungsanleitung Panasonic NVGS17EB (Seite 53 von 56) (Englisch)

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Explanation of terms

ª 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.

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

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.

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.

10)

11)

12)

10 000K

9 000K

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6 000K

5 000K

4 000K

3 000K

2 000K

1 000K

GS35_21_17EB.book 53 ページ２００５年１月２０日　木曜日　午前１０時５９分

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