IMAGE PICKUP DEVICE SYSTEM, INTERCHANGEABLE LENS AND IMAGE PICKUP DEVICE

PURPOSE:To provide an image pickup device system having an improved focusing control by always grasping the driving capacity of an interchangeable lens and predicting a driving time required for driving the lens, in view of such a problem that it is impossible to predict a lens driving time when a s...

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Bibliographische Detailangaben
1. Verfasser:	MIYAKE TOSHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide an image pickup device system having an improved focusing control by always grasping the driving capacity of an interchangeable lens and predicting a driving time required for driving the lens, in view of such a problem that it is impossible to predict a lens driving time when a shutter is released in the case the lens is continuously driven without being stopped in a conventional way and also the prediction accuracy is reduced under a certain environmental condition as for the power supply voltage, the temperature and the attitude of a camera system at photographing. CONSTITUTION:The camera system is provided with the lens 1 constituted of the photographic lens 101, a lens driving part 103, a lens driving control part 104, a communicating means 105, a driving capacity data storing part 106 and a driving capacity data deciding part 107, and provided with a camera 2 constituted of a focus detecting part 205, a focusing control part 206 and an environmental condition detecting part 208. The driving capacity data under a certain environmental condition is decided so as to improve a focusing control performance.