Zoom camera

Details Zoom camera Zoom camera

1989-01-06

1990-08-21

Adams, Russell E.

3541951, G03B 1336

Patent

active

049510754

ABSTRACT:
In a zoom camera disclosed, a memory of an auto-zooming program lines is provided in which a relation between the object distance and the image mangification added with an element of the depth of field is set in a predetermined manner according to each kind of photographing mode, and such a focal length of a focusing lens is computed that the image mangification is set to be a predetermined value based on the object distance and a program line of a photographing mode selected by a user, whereby the focusing lens is driven so as to obtain the focal length. Consequently, auto-zoom photographing at a depth of field and an image magnification suitable for each kind of photographing mode can be achieved. Further, a memory of program lines set according to the vertical and horizontal camera attitudes in photographing is provided, and the image mangification can be changed over according to each camera attitude.

REFERENCES:
patent: 4043642 (1977-08-01), Hirose et al.
patent: 4728980 (1988-03-01), Nakamura et al.
patent: 4748509 (1988-05-01), Otake et al.
patent: 4816859 (1989-03-01), Maruyama et al.
patent: 4825237 (1987-04-01), Hatase et al.
patent: 4829331 (1989-05-01), Aihara

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