Title:
STROBE PROGRAM SHIFT EXPOSURE CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3406620
Kind Code:
B2
Abstract:
PURPOSE: To provide a strobe program exposure control device which can make program shift while maintaining the exposure value determined by the hand move limitation shutter speed and the throttling side limitation stop value at the time of strobe photographing with the brightness remaining low.
CONSTITUTION: When the exposure value determined on the basis of the photo- measuring value and the exposure value calculated by a calculating means, which computes the shutter speed and stop value, exceed the first exposure value determined by the min. limit stop value over the min. stop value of a photographing lens and the min. limit shutter speed below the max. strobe tuned speed, the stop is fixed to the min. limit stop value while the shutter speed is altered according to the calculated exposure value-when greater than the second exposure value determined by the min. limit stop and the strobe tuned limit speed, the shutter speed is fixed to the strobe tuned limit speed while the stop is altered according to the calculated exposure value till the max. limit stop value which is smaller than the max. stop value of the photographing lens.
More Like This:
Inventors:
Isamu Hirai
Hideaki Tsuji
Nobuhiko Matsudo
Hideaki Tsuji
Nobuhiko Matsudo
Application Number:
JP28278292A
Publication Date:
May 12, 2003
Filing Date:
October 21, 1992
Export Citation:
Assignee:
Pentax Corporation
International Classes:
G03B7/16; G03B15/05; (IPC1-7): G03B7/16; G03B15/05
Domestic Patent References:
| JP62168123A | ||||
| JP450833U |
Attorney, Agent or Firm:
Kunio Miura