Photography – With exposure objective focusing means – focusing aid – or... – Lens resetting
Patent
1998-08-12
2000-09-12
Perkey, W. B.
Photography
With exposure objective focusing means, focusing aid, or...
Lens resetting
396 89, G03B 1336
Patent
active
061189472
ABSTRACT:
A method for driving a shutter of a camera includes the steps of determining whether a first shutter release is performed, measuring light and distance to the subject if the first shutter release is performed, determining both a focus position of the focus control lens to the subject and a light exposure according to the measured light and distance, reading focus compensating data stored in a memory, calculating a compensated focus position on the basis of the focus compensating data, determining whether a second shutter release is performed, moving the focus control lens to the compensated focus position, and driving the shutter. The focus compensating data are obtained by a method including the steps of: setting a focus control lens to an initial position, moving a lens barrel to a first zoom position to a subject, measuring actual focus lens position, calculating a focus compensating distance by measuring the difference between the position of a designed focus lens and actual focus lens position, and storing data on the calculated compensating distance in a recording medium.
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Perkey W. B.
Samsung Aerospace Industries Ltd.
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