By Choosing the right aperture in macro photography means balancing two competing demands: you need a small aperture (f/11 to f/16) to gain enough depth of field for your subject to stay sharp, but not so small that diffraction softens your image. This balancing act is what separates compelling close-up work from frustrating, blurry attempts.
When you’re shooting at 1:1 magnification or higher, depth of field collapses to millimeters. At f/2.8, you might have only a sliver of sharpness across an insect’s eye. Stop down to f/16, and you gain enough depth to capture the entire face, but push past f/22 and diffraction starts …
