Panasonic NV-GS90 Operating Instructions Manual

Also see for NV-GS90: Operating instructions

Contents

Others49LSQT1291Explanation of termsª Automatic white balanceWhite balance adjustment recognises the colourof light and adjusts so the white colour willbecome a pure white. The movie cameradetermines the hue of light that comes throughthe lens and white balance sensor, therebyjudging the recording condition, and selects theclosest hue setting. This is called automatic whitebalance adjustment. However, since the moviecamera only stores white colour informationunder several light sources, automatic whitebalance adjustment does not function normallyunder the other light sources.Outside of the effective range of automatic whitebalance adjustment, the image will becomereddish or bluish. Even within the effective rangeof automatic white balance adjustment, theautomatic white balance adjustment may notfunction properly if there is more than one lightsource. For light outside the functional auto whitebalance adjustment range, use the manual whitebalance adjustment mode.1) The effective range of automatic whitebalance adjustment on this movie camera2) Blue sky3) TV screen4) Cloudy sky (rain)5) Sunlight6) White fluorescent lamp7) 2 hours after sunrise or before sunset8) 1 hour after sunrise or before sunset9) Halogen light bulb10) Incandescent light bulb11) Sunrise or sunset12) Candlelightª White balanceThe image recorded by the movie camera maybecome bluish or reddish under the influence oflight sources. To avoid such phenomena, adjustthe white balance.White balance adjustment determines the whitecolour under different light sources. By recognizingwhich is the white colour under sunlight and which isthe white colour under a fluorescent lamp, the moviecamera can adjust the balance among the othercolours.Since white colour is the reference of all colours (light),the movie camera can record pictures in a natural hueif it can recognise the reference white colour.ª Auto focusAuto focus automatically moves the focusing lensforward and backward inside the movie camera tobring the subject into focus.Auto focus has the following characteristics.≥Adjusts so that the vertical lines of a subject areseen more clearly.≥Attempts to bring an object with higher contrastinto focus.≥Focuses on the screen centre only.Due to these characteristics, auto focus does notwork correctly in the following situations. Recordpictures in the manual focus mode.Recording a subject with one end locatedcloser to the movie camera and the other endfarther away from it≥As auto focus adjusts at the centre of animage, it may be impossible to focus on asubject that is located in both the foregroundand background.Recording a subject behind dirty or dusty glass≥The subject behind the glass will not befocused because the focus is on the dirty glass.Recording a subject that is surrounded byobjects with glossy surfaces or by highlyreflective objects≥The recording subject may become blurrybecause the movie camera focuses on theobjects with glossy surfaces or on highlyreflective objects.Recording a subject in dark surroundings≥The movie camera cannot focus correctlybecause the light information that comesthrough 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 whitewall, may become blurry because the moviecamera achieves focus based upon thevertical lines of an image.2)3)4)5)6)7)8)9)10)11)12)10 000K9 000K8 000K7 000K6 000K5 000K4 000K3 000K2 000K1 000K1)

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