Question

write any two methods to reduce spherical aberration of lensess​

Answer 1

Answer:

Aperture blades block the outer edges of a spherical lens, so stopping down the lens—even by a single stop—can dramatically reduce spherical aberration. If you close the aperture, eliminating the most lateral rays of light, the area of best focus seems to shift away from the lens.

Answer 2

Explanation:

Aperture blades block the outer edges of a spherical lens, so stopping down the lens—even by a single stop—can dramatically reduce spherical aberration. If you close the aperture, eliminating the most lateral rays of light, the area of best focus seems to shift away from the lens.