An imaging device comprising: a MOS type imaging element in which pixels having sensitivities for different colors are arranged two-dimensionally; wherein the imaging element has read-out lines, each read-out line (81A, 81B) being a horizontal control line in each row of pixels (R, Gr, B, Gb) that control read-out of all pixels in the row simultaneously, wherein at least two types of rows of pixels are interleaved and have charge accumulation periods different from each other; a driving control unit which drives the imaging element such that a read-out time interval of a charge signal of at least one type of read-out line among the read-out lines is longer than a read-out time interval of another type of read-out line, said read-out time interval being the interval from reading out the line a first time to reading out the line a second time and a charge accumulating period of each pixel of the one type of read-out line is longer than a charge accumulating period of each pixel of said another type of read-out line, an image processing unit which generates an image signal obtained by combining an image signal of each pixel of the one type of read-out line with an image signal of each pixel of said another type of read-out line, wherein, when driving the imaging element, the driving control unit sets a read-out time interval of the one type of read-out line to be m times as long as a read-out time interval of said another type of read-out line where m is an integer, and the image processing unit averages image signals from pixels having sensitivity for different colors which are obtained from said another type of read-out line at m comas, a coma being one frame in a moving image, which m comas are consecutive in a time axis, and generates image signals of one frame using the averaged image signals and the image signals from the pixels having sensitivity for different colors which are obtained from the one type of read-out line. a MOS type imaging element in which pixels having sensitivities for different colors are arranged two-dimensionally; wherein the imaging element has read-out lines, each read-out line (81A, 81B) being a horizontal control line in each row of pixels (R, Gr, B, Gb) that control read-out of all pixels in the row simultaneously, wherein at least two types of rows of pixels are interleaved and have charge accumulation periods different from each other; a driving control unit which drives the imaging element such that a read-out time interval of a charge signal of at least one type of read-out line among the read-out lines is longer than a read-out time interval of another type of read-out line, said read-out time interval being the interval from reading out the line a first time to reading out the line a second time and a charge accumulating period of each pixel of the one type of read-out line is longer than a charge accumulating period of each pixel of said another type of read-out line, an image processing unit which generates an image signal obtained by combining an image signal of each pixel of the one type of read-out line with an image signal of each pixel of said another type of read-out line, wherein, when driving the imaging element, the driving control unit sets a read-out time interval of the one type of read-out line to be m times as long as a read-out time interval of said another type of read-out line where m is an integer, and the image processing unit averages image signals from pixels having sensitivity for different colors which are obtained from said another type of read-out line at m comas, a coma being one frame in a moving image, which m comas are consecutive in a time axis, and generates image signals of one frame using the averaged image signals and the image signals from the pixels having sensitivity for different colors which are obtained from the one type of read-out line.