A solid-state imaging apparatus, of lower power consumption and a smaller area with maintaining sufficient performance, includes a plurality of pixels for reading a plurality of color components, a plurality of holding units holding a signal from each pixel, a plurality of common output lines to which the plurality of respective holding units corresponding to respective color components are connected, and a plurality of output circuits connected to the plurality of common output lines. Then, at least two of the plurality of common output lines are connected to one of the plurality of output circuits through a selecting unit. In addition, outputs of a holding unit to which pixels of at least two different color components among the plurality of pixels in the unit cell are connected are connected to one of the plurality of common output lines through a selecting unit.