Often, stopping down increases sharpness of the image because the rays are forced to go through a smaller aperture, reducing the circle of confusion. But at very small apertures, softness is introduced again due to diffraction.
lhagaman
When stopping down far enough, we approach the limit of a pinhole camera, which has every object in focus perfectly regardless of the distance.
Often, stopping down increases sharpness of the image because the rays are forced to go through a smaller aperture, reducing the circle of confusion. But at very small apertures, softness is introduced again due to diffraction.
When stopping down far enough, we approach the limit of a pinhole camera, which has every object in focus perfectly regardless of the distance.