An endoscope 2 includes: a CDS circuit 31 that samples an image pickup signal from a CCD 11a via a feedthrough sampling pulse SHP and a clamp pulse SHD to output a post-sampling image pickup signal； a CPU 36 that controls a sampling timing of each of SHP and SHD and evaluates the post-sampling image pickup signal from the CDS circuit 31, and a flash memory 25 that stores timing information on the respective timings and timing determination procedure information. The CPU 36, upon receipt of an adjustment instruction for adjustment of the respective timings of SHP and SHD, rewrites the timing information in the flash memory 25 according to a result of evaluation of a plurality of post-sampling image pickup signals obtained by shifting the respective timings based on the timing determination procedure information.
