Panasonic NV-VZ55EN Operating Instructions Manual

Also see for NV-VZ55EM: Service manual

Contents

148ENGLISHHow the White Balance (Tint)Adjustment WorksVideo recording takes place under various light sources, fromsunlight as the main natural light source to a wide range ofartificial light sources such as fluorescent lamps. As each ofthese light sources has a different colour temperature, each ofthem gives the colours of the subject a slightly different tint.Human eyes can easily adjust to different kinds of lighting andrecognize an object as having the same colour, even underdifferent light sources.The eye of the Movie Camera (lens), however, cannot adapt tothe change in lighting and is influenced by the lighting.Therefore, depending on the light source, the picture would berecorded with a bluish or reddish tint. To minimize the influenceof the lighting on the colours of the subject, an adjustment calledWhite Balance Adjustment is necessary.∫ Auto White BalanceThis Movie Camera offers both Auto White Balance Adjustmentand Manual White Balance Adjustment. When the MovieCamera is in the Full Auto Mode, the internal system of theMovie Camera automatically determines the temperature of thelight and compensates the tint of the subject accordingly. Whiteis the basic colour by which the tint is determined. Because thisadjustment is performed based on the white colour, it is calledWhite Balance Adjustment. The optimum settings for severallight sources are stored in the memory of the Movie Camera.The internal microcomputer compares the colour temperature ofthe light received by the White Balance Sensor positioned onthe front of the Movie Camera with the colour stored in memory,and selects the setting for the most similar tint.Be careful not to cover the White Balance Sensor (m 12) withyour hand, etc.∫ Manual White BalanceAlthough this Movie Camera stores the optimum settings forseveral light sources in memory to correctly judge the whitecolour, it cannot cope with all light sources. Therefore, to recordunder those types of lighting (m 96, 98) which cannot becorrectly adjusted with Auto White Balance Adjustment, useManual White Balance Adjustment. (m 96)How the Focus Adjustment WorksIf you look at an object through a magnifying glass and move itcloser or further away from your eye, you will reach a pointwhere the object becomes clearly visible. Being focused or infocus means that the subject can be seen with optimum clarityand sharpness. The distance between the lens and the pointwhere the rays of light come together is called Focal Distance orFocal Length and depends on the size and shape of the lens.Human eyes have lenses too, and when we look at objects atdifferent distances, the shape of these lenses changesautomatically so that we can always see the objects clearly.∫ Auto Focus AdjustmentThe image of the subject enters the Movie Camera through thelens and is converted into an electrical signal (video signal) forrecording onto tape. Based on this signal, the Auto FocusSystem automatically adjusts the focal distance by moving thefocusing lens forward or backward.The focus is adjusted on the subject in the centre of the Finder. ! ! !"#$ !"#$%&'()*+,-./012345)*(6 !"#$%&'()*+,-./0123456 !"#$%&'()*+,-./01 !"#$%&'()*+,-./01)23+4567 !"#$%&'( !"#$%&' ! !"#$%&'()*+, !"#$%& '()*+,-./01234567# !"#$%&'()*+,-./0123∫ !"# !"#$%&'()*+,-./'()*+,-01 !"#$%&'()* +,-./0$%1234 !"#$%&'()*+,-./0'123'( !"#$%&'()* +,-./012)34+* !"#$%&'()*+,-./01234(567# !"#$%&'()*+,-./012345,67 !"#$%&'()*+, -./012345' ! !"#$%&'()*l=NO∫ !"# !"#$%&'()*+,-./0123456789 !"#$%&'()*+,-./0+1#2'(345 !"#$%&'"#()*+,l VSVU !"# !"#$%&'(l=VS !"#$%& !"#$%&'()*+,-./01 2345*67 !"#$%&'()*+,-./+-012%34#$ !"#$%&'()*+,-./0123456789 !"#$%&'()*+,-./012 !"#$%&'()*+,-./012$34"#.5 !"#$%&'()*+,-./01∫ !"# !"#$%&'()*+,-./012345678 !"# !"#$%&'()*+,-./0123 !"#$%&'()$*+ !"#$%&'()*+,-./0