A solid-state image pickup device comprising: a pixel array section including a plurality of pixels arranged in an array, each of the plurality of pixels having a photoelectric conversion function, each of the plurality of pixels in the pixel array section including a first pixel section including at least a microlens, a second pixel section including an electric charge detection element, and a photoelectric conversion element (21, 47) included in the first or second pixel section (60,70), the first and second pixel sections (60,70) being formed in a laminated state, the second pixel sections having a two-dimensional arrangement along a first direction and a second direction that is orthogonal to the first direction, and the first pixel sections having a two-dimensional arrangement along directions different from the first and second directions, wherein the microlens is a multilens provided over two or more pixels of the plurality of pixels, the first pixel section in each of the pixels includes a plurality of divided pixels formed at least in the first direction, each of the divided pixels is allocated for a pixel for L or a pixel for R in stereo, the multilens is arranged to allow light to enter over two or more of the divided pixels formed at least in the first direction; part or all of the multilens is arranged to allow light to enter over different-color divided pixels having different colors that are adjacent to one another, at least in the first direction; and wherein in the pixel array section divided pixels of pixels having different colors are arranged in a mixed state in respective rows, characterized in that divided pixels of pixels having same color are arranged in the odd-numbered columns or in the even-numbered columns in the pixel array section. a pixel array section including a plurality of pixels arranged in an array, each of the plurality of pixels having a photoelectric conversion function, each of the plurality of pixels in the pixel array section including a first pixel section including at least a microlens, a second pixel section including an electric charge detection element, and a photoelectric conversion element (21, 47) included in the first or second pixel section (60,70), the first and second pixel sections (60,70) being formed in a laminated state, the second pixel sections having a two-dimensional arrangement along a first direction and a second direction that is orthogonal to the first direction, and the first pixel sections having a two-dimensional arrangement along directions different from the first and second directions, wherein the microlens is a multilens provided over two or more pixels of the plurality of pixels, the first pixel section in each of the pixels includes a plurality of divided pixels formed at least in the first direction, each of the divided pixels is allocated for a pixel for L or a pixel for R in stereo, the multilens is arranged to allow light to enter over two or more of the divided pixels formed at least in the first direction; part or all of the multilens is arranged to allow light to enter over different-color divided pixels having different colors that are adjacent to one another, at least in the first direction; and wherein in the pixel array section divided pixels of pixels having different colors are arranged in a mixed state in respective rows,