The solid-state image pickup device includes a sensor unit and a focus adjustment circuit, the focus adjustment circuit including a contour extraction circuit which extracts contour signals from wavelength signals W, B, G, and R, a contour signal selection circuit which receives a control signal and the plurality of contour signals extracted by the contour extraction circuit, and selects and outputs a contour signal having a desired wavelength band in accordance with the control signal, and a plurality of addition circuits which add the wavelength signals before the contour signals are extracted by the contour extraction circuit to a contour signal output from a contour signal output circuit.