An image pickup system includes: an image pickup section including a first image pickup device outputting a first image pickup signal, and a second image pickup device outputting a second image pickup signal; a processor that performs signal processing on image pickup signals; and a memory section holding a difference correction parameter, the difference correction parameter indicating difference of image characteristics derived from sensitivity of each image pickup device, in image pickup signals outputted from the first image pickup device and the second image pickup device; and a correction processing section performing correction processing on at least one of the first image pickup signal and the second image pickup signal, based on the difference correction parameter.