PROBLEM TO BE SOLVED: To facilitate gain value setting to achieve a good image quality also for an image pickup element which performs addition among pixels of different colors.SOLUTION: An imaging apparatus comprises: an image pickup element a storage unit for storing linear saturation values a first determination unit that determines a first color corresponding to the pixel of which pixel value is largest among the pixel values of the pixels of the image pickup element and also determines a first pixel value which is the largest value a second determination unit that determines a second pixel value of the pixel of a second color which is a set of additions, to the pixel of the first color in a pixel addition mode a third determination unit that determines a sensitivity ratio between the pixel of the first color and the pixel of the second color, on the basis of the first and second pixel values a fourth determination unit that determines, on the basis of the linear saturation value and the sensitivity ratio, a carrier saturation value which is an upper limit value of an output range in which the result of additions of pixel values in the pixel addition mode keeps linearity relative to the exposure and a gain determination unit that determines a gain value given to the output of the image pickup element, on the basis of the carrier saturation value.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】異なる色同士の画素加算を行う撮像素子についても、十分な画質が得られるゲイン値設定を容易に行う。【解決手段】 撮像装置は、撮像素子と、リニア飽和値を記憶する記憶部と、前記撮像素子の画素のうち画素値が最大値となった画素に対応する第1の色及び前記最大値である第1の画素値を判定する第1の判定部と、画素加算モードにおいて前記第1の色の画素に対して加算の組である第2の色の画素の第2の画素値を判定する第2の判定部と、前記第1及び第2の画素値に基づいて、前記第1の色の画素と前記第2の色の画素との感度比を判定する第3の判定部と、前記リニア飽和値と前記感度比とに基づいて、前記画素加算モードにおける画素値の加算結果が露光量に対して線形を維持する出力範囲の上限値であるキャリア飽和値を求める第4の判定部と、前記キャリア飽和値に基づいて前記撮像素子の出力に与えるゲイン値を決定するゲイン決定部とを具備する。【選択図】図1
