An image pickup apparatus includes: an image pickup device for picking up an image of an object； a reception portion that is provided in a processor including a signal processing portion processes an image signal obtained by picking up the object with the image pickup device, and that receives a first synchronization signal generated in a first synchronization signal generation portion and is transmitted through a cable； a calculation portion that sequentially detects a plurality of periods of the first synchronization signal that the reception portion receives, and carries out processing to perform a calculation that determines an average value of the detected plurality of periods of the first synchronization signal； and a second synchronization signal generation portion that generates a second synchronization signal taking a value based on a calculation result of the calculation portion as a period, and supplies the second synchronization signal to the image pickup device.
