Provided are an imaging setting changing apparatus, an imaging system, and an imaging setting changing method that are capable of improving visibility of a combined image around a movable body. An imaging setting changing apparatus includes an image acquisition unit configured to acquire a plurality of images capturing around a movable body in a partially overlapping manner generated by a plurality of imaging units, and a controller configured to change imaging setting of at least one of two imaging units in such a manner as to reduce at least one of a brightness difference and a color difference of the overlapping area in the images taken by the two imaging units configured to commonly image the overlapping area.
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