A vehicle-mounted camera system, comprising: a vehicle-mounted camera that is provided in a vehicle, and shoots in at least two different exposure times; a signal processing device that is configured to execute a white balance correction processing to two or more types of exposure images shot in the at least two different exposure times and generate a high dynamic range image based on the two or more types of the exposure images to which the white balance correction processing is executed; and a processing switch device that is configured to obtain an illumination environment in which the vehicle is placed and switch the white balance correction processing for the two or more types of the exposure images by the signal processing device according to the obtained illumination environment, wherein the signal processing device includes, as the white balance correction processing, A-a white balance correction processing for a relatively short exposure time image of the two or more types of the exposure images and a white balance correction processing for a relatively long exposure time image of the two or more types of the exposure images being set to an automatic white balance correction processing; B-the white balance correction processing for the relatively short exposure time image of the two or more types of the exposure images being set to a fixed white balance correction processing having a previously set parameter, and the white balance correction processing for the relatively long exposure time image of the two or more types of the exposure images being set to the automatic white balance correction processing; and C-the white balance correction processing for the relatively short exposure time image of the two or more types of the exposure images and the white balance correction processing for the relatively long exposure time images of the two or more types of the exposure images being set to the fixed white balance correction processing having the predetermined set parameter, and the processing switch device is configured to specify any one of first illumination environment of an outside in a daytime, second illumination environment of an outside in a nighttime, and third illumination environment of a single light source, and switch the white balance correction processing to the white balance correction processing A when first illumination environment is specified, the white balance correction processing to the white balance correction processing B when second illumination environment is specified, and the white balance correction processing to the white balance correction processing C when third illumination environment is specified. a vehicle-mounted camera that is provided in a vehicle, and shoots in at least two different exposure times; a signal processing device that is configured to execute a white balance correction processing to two or more types of exposure images shot in the at least two different exposure times and generate a high dynamic range image based on the two or more types of the exposure images to which the white balance correction processing is executed; and a processing switch device that is configured to obtain an illumination environment in which the vehicle is placed and switch the white balance correction processing for the two or more types of the exposure images by the signal processing device according to the obtained illumination environment, wherein the signal processing device includes, as the white balance correction processing, A-a white balance correction processing for a relatively short exposure time image of the two or more types of the exposure images and a white balance correction processing for a relatively long exposure time image of the two or more types of the exposure images being set to an automatic white balance correction processing; B-the white balance correction processing for the relatively short exposure time image of the two or more types of the exposure images being set to a fixed white balance correction processing having a previously set parameter, and the white balance correction processing for the relatively long exposure time image of the two or more types of the exposure images being set to the automatic white balance correction processing; and C-the white balance correction processing for the relatively short exposure time image of the two or more types of the exposure images and the white balance correction processing for the relatively long exposure time images of the two or more types of the exposure images being set to the fixed white balance correction processing having the predetermined set parameter, and the processing switch device is configured to specify any one of first illumination environment of an outside in a daytime, second illumination environment of an outside in a nighttime, and third illumination environment of a single light source, and switch the white balance correction processing to the white balance correction processing A when first illumination environment is specified, the white balance correction processing to the white balance correction processing B when second illumination environment is specified, and the white balance correction processing to the white balance correction processing C when third illumination environment is specified.