[Object] To realize transmission of a biological image suitable to image capture conditions and characteristics of an output apparatus. [Solving Means] There is provided a control apparatus including a ratio calculation unit calculating a first ratio of a bit assignment relating to transmission of a biological image on the basis of image capture conditions and a bit assignment determination unit determining the bit assignment on the basis of the first ratio. In addition, there is provided a control system including an image capture apparatus including an image capture unit capturing an object, a control apparatus including a ratio calculation unit calculating a first ratio of a bit assignment relating to transmission of a biological image on the basis of image capture conditions relating to the object, a bit assignment determination unit determining the bit assignment on the basis of the first ratio, and an image processing unit performing image processing based on an image captured by the image capture unit and the bit assignment and generating the biological image, and an output apparatus including an output unit performing an output relating to the biological image based on the bit assignment.