An image-pickup apparatus (1) includes a light projection part (32, 33) projecting light to an object, a focus detection part (26) detecting a focus state, a light-source detection part 31 detecting information relating to a light source. When a focus detection is performed without lighting of the light projection part, a controller (100) generates information used for focusing control based on a focus state detection result and the information relating to the light source. When the focus detection is performed with lighting of the light projection part, the controller generates the information used for the focusing control based on the focus state detection result and correction information depending on a wavelength of the light projected from the light projection part without using the information relating to the light source. Thus, a highly-accurate AF control can be performed under various light sources including an AF assist light.