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PROBLEM TO BE SOLVED: To allow an automatic focusing function to properly operate even when an arbitrary interchangeable lens is mounted. SOLUTION: The present invention relates to allow the automatic focusing function properly operate regardless a mounted interchangeable AF lens part 3 because a fo...

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Bibliographische Detailangaben
Hauptverfasser:	DATE HITOSHI, SATO SEIJI, TOMITA YASUYUKI, TERADA HIROTSUGU, KAMEYAMA TAKASHI, YOSHIKAWA KAZUMASA, TAKEMOTO SHINJI, KARASAWA KATSUMI, SUDO HIDEKAZU
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 ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To allow an automatic focusing function to properly operate even when an arbitrary interchangeable lens is mounted. SOLUTION: The present invention relates to allow the automatic focusing function properly operate regardless a mounted interchangeable AF lens part 3 because a focal shift amount Δx' for wobbling as much as an unrecognizable level of defocusing by a photographer is calculated at the interchangeable AF lens part 3 on the basis of the diameter d of an allowable circle of confusion and a ratio a with respect to a depth of focus and an f-stop value FNO of 22, by supplying the diameter d of an allowable circle of confusion and the ratio a with respect to the depth of focus into the interchangeable AF lens part 3 from the main body part 2 of a camera, thus a focusing direction is decided by a control part 28 of the main body part 2 of the camera. COPYRIGHT: (C)2005,JPO&NCIPI