Shoot sharper landscapes
Small apertures such as f/16 and f/22 increase the depth of field, or the amount of front-to-back sharpness. Perfect for landscapes, you might think. The trade-off is that they lead to softer pictures due to the effects of diffraction (where the light rays are bent out of shape as they pass through the small hole). For sharper scenic shots, it’s worth sacrificing a little depth of field and using an aperture around f/11 for edge-to-edge sharpness across the entire frame.