| 摘要 |
<p>According to the present invention, a magnetic recording type of photographic apparatus is disclosed which comprises an image sensor (106), converting means (108) for converting a video signal supplied from the image sensor (106) into a standard television signal, motion-image signal processing means (115) for applying signal processing to the standard television signal provided by the converting means (108) and forming a motion-image signal, still-image signal processing means (118-120) for applying signal processing to the standard television signal provided by the converting means (108) and forming a still-image signal, recording means (121) for recording the still-image signal supplied from the still-image signal processing means (118-120) in a still-image recording area of a video track formed obliquely with respect to a longitudinal axis of a magnetic tape, and for recording the motion-image signal supplied from the motion-image signal processing means (115) in a motion-image recording area of the video track, wobbling means (125) for causing the image sensor (106) to wobble along an optical axis, controlling means for varying a wobbling frequency of the wobbling means (125) by a predetermined frequency between still-image photography and motion-image photography, extracting means (109) for extracting a high-frequency component of the video signal supplied from the image sensor (106) which is being made to wobble by the wobbling means (125), peak detecting means (111) for detecting a peak during a frame period of the high-frequency component extracted by the extracting means (109), detecting means (112) for detecting a deviation from an in-focus point on the basis of the peak detected by the peak detecting means (111) and driving means (116) for driving a focusing lens (101) on the basis of the deviation detected by the detecting means (112). <IMAGE></p> |
