Lens aberration refers to the imperfections in the image produced by a lens, which can lead to distortions or blurriness. These imperfections occur because lenses are made of curved glass, and light rays may not converge at a single point. Common types of lens aberration include chromatic aberration, where colors are misaligned, and spherical aberration, where light rays from the edges of the lens focus differently than those from the center. These aberrations can affect the quality of photographs taken with cameras or images produced by optical instruments like telescopes and microscopes. To minimize lens aberration, manufacturers use advanced designs and coatings, and photographers can adjust settings or use software to correct these issues in post-processing.