An endoscope is an endoscope connectable to a processor (3) provided with a high frequency component enhancement circuit (33) configured to perform, for an image pickup signal having an attenuated high frequency component, enhancement correction of the high frequency component, the endoscope including: a CMOS image sensor (11) provided with an image pickup portion configured to pick up an optical image of a subject and generate an analog image pickup signal and an A/D converting portion configured to convert the analog image pickup signal to a digital image pickup signal and output the digital image pickup signal； a cable (40) for transmitting the digital image pickup signal； and a filter (24) having frequency characteristics equalizing frequency characteristics of the high frequency component enhancement circuit.
