| 摘要 |
<p>PURPOSE:To obtain a photograph with less failure without varying a set value by correct an aperture value or exposure time value automatically into a target value to begin with a value calculated in program mode. CONSTITUTION:The output-side switch Sw of a comparing circuit 16 is closed at the initial stage of depression of a shutter release button to start setting circuits 8 and 6 for arguments alpha and beta, and the calculated aperture value Av and exposure time value Tv are stored in storage circuits 17 and 18 and displayed 20. When an exposure factor determined by the program is varied, the shutter release button is released temporarily, switches S1 and S2 are operated over a look at the display 20, and the final values Tv and Av are displayed on the display device 20 and also sent to an aperture controller 19 and a two-curtain controller 21. Then, the shutter release button is pressed in again to release the shutter.</p> |
