1. An imaging apparatus comprising: a pixel section having a plurality of pixels arranged in two dimensions for effecting a photoelectric conversion, the pixel section including an effective pixel region where an object image is formed; a light blocking section for blocking a light to conceal said pixel section in accordance with a light blocking instruction signal; a region setting section for outputting said light blocking instruction signal and setting, at the time of blocking light, a correcting pixel region within the effective pixel region; a calculating section for processing the plurality of the pixel lines in the correcting pixel region to obtain a line of correction data for vertical stripe-like noise and horizontal dark shading; said correction data is based on the plurality of pixel lines in the correcting pixel region where no fault pixel is contained or where the number of fault pixels having fault is less than or equal to a predetermined number; a line memory for retaining the line of correction data from the calculating section; and a correcting section for correcting an output of pixel data from said effective pixel region using the line of correction data retained at said line memory.