An imaging system includes: an imaging unit configured to capture an image in a temporally continuous manner a change rate setting unit configured to variably set a change rate of brightness of image continuously captured by the imaging unit a parameter setting unit configured to be capable of variably setting a light adjustment parameter for altering the change rate of the brightness of the image such that the change rate set by the change rate setting unit is obtained a photometry unit configured to acquire a photometric value indicating the brightness of the image and a light adjustment unit configured to generate, based on the photometric value, a light adjustment control signal in line with a light adjustment profile for causing the photometric value to reach a predetermined target value of the brightness within a certain time period.
