A solid-state imaging apparatus includes a plurality of unit cell groups arranged in a row direction and a plurality of common output lines for transmitting output signals from the plurality of unit cell groups, each including a plurality of unit cells arranged in the row direction. Each of the plurality of unit cells includes an m number of pixels arranged in a column direction and including photoelectric conversion elements each converting incident light to different color signals; an m number of holding units holding color signals of the m number of pixels; an m number of color selecting switches each selecting one color signal from within the color signals held in the m number of holding units; and a transfer switch outputting the color signals selected by the color selecting switches to one common output line of the plurality of common output lines.