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 12 includes an image acquisition unit 23 configured to acquire a plurality of images capturing around a movable body in a partially overlapping manner generated by a plurality of imaging units 13, 14, 15L, and 15R, and a controller 25 configured to change imaging setting of at least one of two imaging units (13, 14, 15L, and 15R) 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 (13, 14, 15L, and 15R) configured to commonly image the overlapping area.
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