Panasonic NV-RX3A Operating Instructions Manual

Also see for NV-RX3A: Operating instructions Operating instructions

1) Infrared Focusing: The recording distance is calculated and adjusted based on the time it takes for aninfrared signal emitted from the front of the Movie Camera to be bounced off the subject and received backby a sensor on the Movie Camera.2) Camera-Internal Electronic Focusing: The focus is adjusted based exclusively on the image received by theMovie Camera and the resulting picture signal.This Panasonic Movie Camera employs the Internal Electronic Focusing Method.•As shown in Fig. 1 on the left page, when you aim the Movie Camera at the subject you want to record, themicroprocessor moves the lens little by little based on the information about vertical contours of the subject inthe picture signal. At the point where the vertical contours of the subject become sharpest, it judges that thesubject is in focus and stops the lens. (See Fig. 2.)• Special Characteristics of the Movie Camera’s Automatic Focus Adjustment Mode(A) It adjusts the focus for sharpest vertical lines.(B) It adjusts the focus on parts of the subject with strong contrast.(C) It adjusts the focus only on the centre part of the picture on the viewfinder screen. (The area where thesubject is in focus is much smaller than the TV screen, as shown in the Fig. 3.)Unlike the human eyes, however, the Movie Camera’s Auto Focus System cannot change the focus from adistant to a close subject without any delay. Therefore, use the Manual Focus Mode when you are going torecord the following types of subjects or in the following kinds of places:Subjects with Shiny Surfacesor Much Light ReflectionAs the Movie Camera adjusts thefocus on the objects with shinysurfaces or much light reflection,the subject may go out of focus.•The subject may be out of focuswhen it is recorded at theseaside in the evening, underfirework illumination or whenspecial kinds of lights are used.Fast-moving SubjectsAs the lens is movedmechanically, it cannot followfast-moving subjects withoutdelay.• Subjects like a quickly andabruptly moving children maytemporarily go out of focus.Subjects with Weak ContrastAs the Movie Camera adjusts thefocus based on vertical contoursin the picture, subjects with littlecontrast may be out of focus.•When recording a flat whitewall, for example, the MovieCamera has no information bywhich it can adjust the focuscorrectly.Subjects with a Part of It Nearthe Movie Camera and AnotherPart Far Away from itAs the focus is adjusted on thecentre part of the image, it isdifficult to bring the distant part ofthe subject in focus.•When you want to record aperson with a distant mountainbehind, it is not possible tofocus on both.Subjects Behind MovingObjectsAs the focus is adjusted on theperson or object that passesbetween the Movie Camera andthe subject, the subjecttemporarily go out of focus.•When recording a subjectacross a street on which carsare running, the subjects maygo in and out of focus.Subjects with Dark SurfacesIf the amount of light entering thelens is greatly reduced, the MovieCamera has very little informationby which to adjust the focus.•When recording persons in darksurroundings, precise focusingmay not be possible.• Precise focusing may also not be possible for subjects that have no vertical contours or are behind glasscovered with dirt, dust or water droplets.• Finger print marks on lens may cause focus not to operate clearly. When at wide angle the Movie Cameramay attempt to focus onto the finger prints (treating them as a MACRO Subject). Check and clean the lenscorrectly.• If recording in a moving vehicle focus accuracy may be impaired due to the following:a) Dirt or water droplets on the car windows and recording through glass may change the focus pointb) Scenery changing too quickly, no time for the Movie Camera to adjust focusc) Distance between subject and Movie Camera always changingWe suggest you use Manual Focus. Please refer to p. 30 and 31 “Recording in Manual Focus Mode” in youroperating instructions.33 Advanced Operations