Television – Camera – system and detail – Optics
Reexamination Certificate
2004-03-18
2009-08-18
Hannett, James M (Department: 2622)
Television
Camera, system and detail
Optics
C348S208110, C348S208120, C348S347000, C348S364000
Reexamination Certificate
active
07576793
ABSTRACT:
An image pickup apparatus which is capable of optimizing the responsiveness of linear changes in focus to operations of a ring member without sacrificing the operability of the ring member, while using a small-sized, low-cost ring member for manual operations. The rotating operation state of a focus ring600is detected by ring rotation sensors603, 604. A camera microcomputer116causes a focus lens105to be moved and stopped in an optical axis direction thereof based on results of the detection by the ring rotation sensors603, 604. The camera microcomputer116controls the responsiveness of linear changes in focus to the rotating operation state of the ring member detected by the ring rotation sensors603, 604in accordance with at least the depth of focus.
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Canon Kabushiki Kaisha
Hannett James M
Khan Usman
Rossi Kimms & McDowell LLP
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