A solid-state imaging apparatus comprising: a pixel array section; a column AD section configured to be arranged for each of columns in the pixel array section; and a column enable control section configured to programmably control operations of the column AD sections in accordance with an imaging mode, wherein the column enable control section is configured to control the operations of the column AD sections in accordance with a position of a region of interest of the imaging mode, and the region of interest includes a region in which a motion is detected in a motion detection mode or includes a region in which an entirety or part of a human body is detected in a person detection mode, and wherein the column enable control section is configured to control the operations of the column AD sections in the motion detection mode by thinning-out pixels in the pixel array section in units of pixel blocks in a horizontal, H, direction and a vertical, V, direction when read out, and, when a motion is detected in a region of one or multiple pixel blocks, setting that pixel block as a region of interest by operating of the column AD sections corresponding to columns of the region of interest during readout, and by stopping operations of the column AD sections corresponding to columns other than columns of the region of interest during readout of the region of interest, the column enable control section being further configured to control the operations of the column AD sections in the person detection mode by thinning-out pixels of the pixel array section in units of a predetermined number of columns in the H direction when read out, and, when faces of multiple persons are detected, setting multiple regions in which the faces are detected as regions of interest, by operating of the column AD sections corresponding to columns of the region of interest during readout, and by stopping operations of the column AD sections corresponding to columns other than columns of the regions of interest during readout of the regions of interest. a pixel array section; a column AD section configured to be arranged for each of columns in the pixel array section; and a column enable control section configured to programmably control operations of the column AD sections in accordance with an imaging mode, wherein the column enable control section is configured to control the operations of the column AD sections in accordance with a position of a region of interest of the imaging mode, and the region of interest includes a region in which a motion is detected in a motion detection mode or includes a region in which an entirety or part of a human body is detected in a person detection mode, and wherein the column enable control section is configured to control the operations of the column AD sections in the motion detection mode by thinning-out pixels in the pixel array section in units of pixel blocks in a horizontal, H, direction and a vertical, V, direction when read out, and, when a motion is detected in a region of one or multiple pixel blocks, setting that pixel block as a region of interest by operating of the column AD sections corresponding to columns of the region of interest during readout, and by stopping operations of the column AD sections corresponding to columns other than columns of the region of interest during readout of the region of interest, the column enable control section being further configured to control the operations of the column AD sections in the person detection mode by thinning-out pixels of the pixel array section in units of a predetermined number of columns in the H direction when read out, and, when faces of multiple persons are detected, setting multiple regions in which the faces are detected as regions of interest, by operating of the column AD sections corresponding to columns of the region of interest during readout, and by stopping operations of the column AD sections corresponding to columns other than columns of the regions of interest during readout of the regions of interest.