| 摘要 |
PURPOSE:To enable precise and easy confirmation of correctness of exposure of an object by inserting a marker in prescribed signal level position and indicating a contour line formed by connecting this in a display unit. CONSTITUTION:Image pickup information from an object is photoelectrically converted by an image pickup device 1. A video signal photoelectrically converted by the device 1 is amplified by a signal processing circuit 2, and outputted to an output terminal 3 as a reference TV signal. On the other hand, a luminance signal 4 from the circuit 2 is given to an exposure limit confirming circuit 5 as a marker generating device, and a marker for confirming proper limit point of exposure etc. is inserted. Reference voltage of the circuit 5 is set by a setting circuit 7 and can be changed freely. Output of the circuit 5 is given to an electronic viewer as a display device and displayed in a form like a contour. |
