A camera device (10;1000) comprising: an image capturing means installed on a vehicle and comprising a lens for forming an image of the vehicle surroundings; a lens cleaning means for cleaning the lens by spraying a cleaning fluid on the lens in accordance with a predetermined lens cleaning step, in which at least a supply time for supplying cleaning fluid to the lens surface is predetermined; an adhesion state assessment means for assessing an adhesion state of foreign matter adhered to the lens based on the amount of change of the adhesion degree, by calculating an adhesion degree of foreign matter adhered to a predetermined area of the lens, based on a captured image captured by the image capturing means, the adhesion state assessment means assessing the adhesion state being a first state when the adhesion degree of foreign matter is equal to or greater than a first adhesion threshold and less than a second adhesion threshold, and being a second state when the adhesion degree of foreign matter is equal to or greater than the second adhesion threshold; and a cleaning control means for extending the time until a time to start supplying the cleaning fluid and increasing the amount of cleaning fluid supplied in the lens cleaning step when the adhesion state is assessed as being the first state, the larger the amount of change in the adhesion degree of foreign matter adhered to the lens determined by the adhesion state assessment means, the longer the lens cleaning controller extends the time until the cleaning fluid is supplied, for advancing the time until a time to start supplying the cleaning fluid and decreasing the amount of cleaning fluid supplied in the lens cleaning step when the adhesion state is assessed as being the second state, and for setting a default time until a time to start supplying the cleaning fluid and a default amount of cleaning fluid supplied in the lens cleaning step when the adhesion state is assessed as being neither the first state nor the second state. an image capturing means installed on a vehicle and comprising a lens for forming an image of the vehicle surroundings; a lens cleaning means for cleaning the lens by spraying a cleaning fluid on the lens in accordance with a predetermined lens cleaning step, in which at least a supply time for supplying cleaning fluid to the lens surface is predetermined; an adhesion state assessment means for assessing an adhesion state of foreign matter adhered to the lens based on the amount of change of the adhesion degree, by calculating an adhesion degree of foreign matter adhered to a predetermined area of the lens, based on a captured image captured by the image capturing means, the adhesion state assessment means assessing the adhesion state being a first state when the adhesion degree of foreign matter is equal to or greater than a first adhesion threshold and less than a second adhesion threshold, and being a second state when the adhesion degree of foreign matter is equal to or greater than the second adhesion threshold; and a cleaning control means for extending the time until a time to start supplying the cleaning fluid and increasing the amount of cleaning fluid supplied in the lens cleaning step when the adhesion state is assessed as being the first state, the larger the amount of change in the adhesion degree of foreign matter adhered to the lens determined by the adhesion state assessment means, the longer the lens cleaning controller extends the time until the cleaning fluid is supplied, for advancing the time until a time to start supplying the cleaning fluid and decreasing the amount of cleaning fluid supplied in the lens cleaning step when the adhesion state is assessed as being the second state, and for setting a default time until a time to start supplying the cleaning fluid and a default amount of cleaning fluid supplied in the lens cleaning step when the adhesion state is assessed as being neither the first state nor the second state.