Lenses
Diffraction Versus Aperture
What is Diffraction?
Diffraction is a physical phenomenon that causes light to spread when passing through an aperture, which limits resolution as aperture size decreases (higher f-numbers). It results in a softening or blurring of details in the image, becoming more significant as the aperture is reduced.
Diffraction and Aperture Size:
Diffraction occurs at all apertures but becomes noticeable and starts affecting image sharpness at smaller apertures. With a 64 MP sensor, the pixel size is relatively small (around 0.8 μm). Small pixel sizes are more sensitive to diffraction, meaning diffraction will affect image quality at a wider aperture compared to sensors with larger pixels.