An image processing apparatus capable of properly correcting an image component corresponding to non-image-forming light and generated in image data or the like obtained when an object having high luminance is taking. The image processing apparatus processes image data including a first image component corresponding to image-forming light and a second image component corresponding to non-image-forming light. The image processing apparatus comprises an image-taking section which obtains the image data and a correction section which performs a correction processing for the image data so as to reduce the visibility of the second image component. The correction section performs a color conversion processing as the correction processing.