The present disclosure relates to an inspection apparatus and an inspection method that enable inspection of the performance of an image pickup element. Generation of collimated light and transmission of part of the collimated light through a transmission filter having a light-blocking face provided with circular holes arranged regularly, causes conversion to rays of columnar collimated light arranged regularly. An image including the rays of columnar collimated light arranged regularly, is captured by an image pickup element being inspected. Then, acquisition of the difference between the image captured by the image pickup element being inspected and an ideal image captured by an ideal image pickup element and comparison between the difference and a threshold, result in inspection of the performance of the image pickup element being inspected.