1. An electronic camera comprising: an image capturing part generating image data by photoelectric conversion; a light shielding mechanism shielding said image capturing part from light; a control part that drives said image capturing part to capture an image of a field and generate image data, and drives said image capturing part shielded from light by said light shielding mechanism to generate blackout image data; and a noise reducing part that reduces fixed pattern noise in the image data according to the blackout image data, wherein for the blackout image data generation, said control part sets an image capturing condition under which a level difference between the fixed pattern noise and random noise increases, and said noise reducing part corrects a level difference of the fixed pattern noise between the blackout image data and the image data due to a change in said image capturing condition, and reduces the fixed pattern noise in the image data by subtracting the blackout image data from the image data after the level correction.