1988-05-27
1989-07-11
Perkey, W. B.
354219, 3542891, G03B 1724, G03B 1720
Patent
active
048476463
ABSTRACT:
A camera accessory is provided which allows a camera to photograph in a pseudo focal length photographing mode. In the pseudo focal length photographing mode, a portion of an image recorded onto a film is reproduced on a print with larger enlargement than a normal image. Therefore, a print can be obtained as if it has been printed from an image recorded on a film which had been photographed by an objective lens having a focal length longer than the actual focal length of the objective lens used. Thus, according to the camera accessory, photographing in the pseudo focal length photographing mode can be possible if used in a camera which is originally incapable of the pseudo focal length photographing mode.
REFERENCES:
patent: 3490844 (1970-01-01), Sapp
patent: 3848984 (1974-11-01), Kanno
patent: 4361388 (1982-11-01), Mlcak et al.
patent: 4362369 (1982-12-01), Kazami et al.
patent: 4583831 (1986-04-01), Harvey
patent: 4639111 (1987-01-01), Harvey
Hata Yoshiaki
Hoda Takeo
Inoue Manabu
Kudo Yoshinobu
Taniguchi Nobuyuki
Minolta Camera Kabushiki Kaisha
Perkey W. B.
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