Enhancing image quality imaging unit and image sensor

An imaging unit comprising:nan image sensor including a number of pixels arranged in a matrix, the pixels having color pixels where color filters are disposed, and white pixels where the color filters are not disposed;a sampling circuit section for sampling pixel signals generated in the image sensor; anda main controller for controlling the image sensor and/or the sampling circuit section to sample pixel signals generated in the white pixels or pixel signals generated in the color pixels sequentially in a time-series manner, whereinthe sampling circuit section includes a first sampling circuit and a second sampling circuit, andthe main controller controls the image sensor to output substantially all the pixel signals generated in the image sensor to allow the first sampling circuit to sample pixel signals generated in the white pixels out of the pixel signals outputted from the image sensor, and to allow the second sampling circuit to sample pixel signals generated in the color pixels out of the pixel signals outputted from the image sensor.