| 摘要 |
PURPOSE:To prevent the photographing defects due to the improper exposure data by monitoring the exposure data set at the camera side at the side of an adaptor device. CONSTITUTION:A camera control microcomputer CMC is started with push of a photometric switch S1, a release switch S2, a setting switch for exposure data (Tv, Av, MOD), a film sensitivity setting ISO key, etc. When the switch S1 is pushed, the CMC starts a photometric action, the photodetecting output of a photodetector 25 is inputted to the CMC via an A/D converter 25a and the photometric value is obtained for the luminance of a subject. The exposure data is computed based on the photometric value, a set exposure mode, and the ISO value inputted from a still video bag as a CAS code. Then the CMC sends the photometric value and the computed exposure value in series to a bag control microcomputer as a serial output signal OUT synchronously with a clock signal SCK. |
