Abstract: An image pick-up apparatus adapted to respectively transmit image pick-up outputs of three primary color from the image pick-up unit through different paths to implement signal processing thereto, wherein image pick-up outputs of three primary colors transmitted to the signal processing unit are introduced to sample-and-hold circuits and delay circuits to control sampling timings of the sample-and-hold circuits and delay times of the delay circuits on the basis of phase differences between respective outputs to thereby correct, at the signal processing unit, phase differences produced between respective image pick-up outputs resulting from differences between lengths of the transmission paths.