To provide a camera capable of renewing a drive target of a focus lens without lowering focus adjusting accuracy in the midst of driving the focus lens even if communication between a camera main body and an interchangeable lens is not good without providing a dedicated CPU for AF control, and a camera system and an interchangeable lens.
An arithmetic operation means transmits information on timing of photoelectric conversion by a photoelectric conversion means to the interchangeable lens before photoelectric conversion is performed by the photoelectric conversion means in the midst of driving the focus lens by a drive means. A position detection means detects a lens position corresponding to the timing of the photoelectric conversion by the photoelectric conversion means and transmits it to the arithmetic operation means. The arithmetic operation means which receives it calculates a drive target lens position based on the lens position.
| JPS58121141 | FOCUS DETECTOR OF OPTICAL PICKUP |
| JP3028563 | [Title of Invention] Camera autofocus device |
KIKUCHI TETSUHISA
NAKADA KOICHI
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
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