| 摘要 |
PURPOSE:To improve the effect of an image pickup by limiting a specific region to the image pickup visual field of a TV camera so as to adjust exposure depending on the luminance of the region thereby deciding easily the exposure of an object being a theme. CONSTITUTION:A horizontal synchronizing signal A, a vertical synchronizing signal B and a photometry range designating signal C designated by key operation or the like are inputted to a microcomputer 1 of the exposure adjusting system of the TV camera from a TV canera device. Further, an image pickup signal F image picked up by the camera device is given to an image pickup signal control circuit 7 and a luminance signal E is applied to a gate connected to an exposure control circuit 6. The computer 1 corresponds to the scanning of an electron beam by using the signals A, B and the designating signal C and applies a designating spot signal D to the circuit 7 and the gate 5 when the electron beam is within the designating range of the designating signal C at each time division of the scanning. Further, the signal D controls the gate 5 so as to input the luminace signal E to the circuit 6 and a finder 8 is controlled so as to adjust the exposure of the object being a theme. |
